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( Last updated: Dec. 14, 2024 )

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Original papers

| 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | before 2011 |

     ==【 2024 】==
  1. Rotational Grüneisen ratio: a new probe for quantum criticality in anisotropic systems
    Shohei Yuasa, Yohei Kono, Yuta Ozaki, Minoru Yamashita, Yasuyuki Shimura, Toshiro Takabatake, and Shunichiro Kittaka
    accepted for publication in Phys. Rev. B
    (preprint: arXiv:2412.09047)
  2. Field-Induced Criticality in YbCu4Au
    Takanori Taniguchi, Kotaro Osato, Hirotaka Okabe, Takafumi Kitazawa, Masahiro Kawamata, Shota Hashimoto, Yoichi Ikeda, Yusuke Nambu, Dita Puspita Sari, Isao Watanabe, Jumpei G. Nakamura, Akihiro Koda, Jun Gouchi, Yoshiya Uwatoko, Shunichiro Kittaka, Toshiro Sakakibara, Masaichiro Mizumaki, Naomi Kawamura, Takayoshi Yamanaka, Koichi Hiraki, Takahiko Sasaki, and Masaki Fujita
    J. Phys. Soc. Jpn. 93 124706 2024 14th Nov.
    (preprint: arXiv:2407.14383)
  3. Multiple magnetic orders discovered in the superconducting state of EuFe2(As1-xP)2
    Nan Zhou, Yue Sun, Ivan S Veshchunov, S. Kittaka, X. L. Shen, H. M. Ma, W. Wei, Y. Q. Pan, M. Cheng, Y. F. Zhang, Y. Kono, Yuping. Sun, T. Tamegai, Xuan Luo, Zhixiang Shi, and Toshiro Sakakibara
    New J. Phys. 26 093008 2024 6th Sep.
  4. Anisotropy of the magnetic-field-induced phase pocket in the non-Kramers doublet system PrIr2Zn20
    Shunichiro Kittaka, Takahiro Onimaru, Keisuke T. Matsumoto, and Toshiro Sakakibara
    Phys. Rev. B 110 L081106 2024 9th Aug.
    (preprint: arXiv:2407.14383)
  5. Quantum criticality linked to the suppressed superconducting upper critical field in Ni-doped CeCoIn5
    Azumi Yashiro, Rahmanto, Kaketo Inami, Kohei Suzuki, Kaede Inoh, Teppei Takahashi, Ryosuke Koizumi, Yohei Kono, Shunichiro Kittaka, Yusei Shimizu, Fuminori Honda, Dai Aoki, Kenichi Tenya, and Makoto Yokoyama
    Phys. Rev. Mater. 8 L081801 2024 8th Aug.
     ==【 2023 】==
  6. Modulation vector of the Fulde-Ferrell-Larkin-Ovchinnikov state in CeCoIn5 revealed by high-resolution magnetostriction measurements
    Shunichiro Kittaka, Yohei Kono, Kaito Tsunashima, Daisuke Kimoto, Makoto Yokoyama, Yusei Shimizu, Toshiro Sakakibara, Minoru Yamashita, and Kazushige Machida
    Phys. Rev. B 107 L220505 2023 30th June
    (preprint: arXiv:2306.12207)
  7. Random singlets in the s=5/2 coupled frustrated cubic lattice Lu3Sb3Mn2O14
    Chanhyeon Lee, Suheon Lee, Heung-Sik Kim, Shunichiro Kittaka, Yoshimitsu Kohama, Toshiro Sakakibara, Ki Hoon Lee, J. van Tol, Denis I. Gorbunov, Seung-Hwan Do, Sungwon Yoon, Adam Berlie, and Kwang-Yong Choi
    Phys. Rev. B 107 214404 2023 1st June
     ==【 2022 】==
  8. Anomalous electromagnetic response in the spin-triplet superconductor UTe2
    Yusei Shimizu, Shunichiro Kittaka, Yohei Kono, Toshiro Sakakibara, Kazushige Machida, Ai Nakamura, Dexin Li, Yoshiya Homma, Yoshiki J. Sato, Atsushi Miyake, Minoru Yamashita, and Dai Aoki
    Phys. Rev. B 106 214525 2022 23rd Dec.
  9. Piezomagnetic switching of anomalous Hall effect in an antiferromagnet at room temperature
    M. Ikhlas, S. Dasgupta, F. Theuss, T. Higo, Shunichiro Kittaka, B. J. Ramshaw, O. Tchernyshyov, C. W. Hicks, and S. Nakatsuji
    Nat. Phys. 18 1086 2022 19th Aug.
    (preprint: arXiv:2206.00793)
  10. Anisotropic field response of specific heat for a ferromagnetic superconductor UCoGe in magnetic fields
    Shota Nakamura, Shunichiro Kittaka, Kazushige Machida, Yusei Shimizu, Ai Nakamura, Dai Aoki, and Toshiro Sakakibara
    Phys. Rev. B 106 035152 2022 28th July
    (preprint: arXiv:2207.07266)
  11. Nature of field-induced antiferromagnetic order in Zn-doped CeCoIn5 and its connection to quantum criticality in the pure compound
    Makoto Yokoyama, Yutoku Honma, Yoshiki Oshima, Rahmanto, Kohei Suzuki, Kenichi Tenya, Yusei Shimizu, Dai Aoki, Akira Matsuo, Koichi Kindo, Shota Nakamura, Yohei Kono, Shunichiro Kittaka, and Toshiro Sakakibara
    Phys. Rev. B 105 054515 2022 24th Feb.
     ==【 2021 】==
  12. Development of high-resolution capacitive Faraday magnetometers for sub-Kelvin region
    Y. Shimizu, Y. Kono, T. Sugiyama, S. Kittaka, Y. Shimura, A. Miyake, D. Aoki, and T. Sakakibara
    Rev. Sci. Instrum. 92 123908 2021 20th Dec.
  13. Gapped ground state in a spin-1/2 frustrated square lattice
    H. Yamaguchi, N. Uemoto, T. Okubo, Y. Kono, S. Kittaka, T. Sakakibara, T. Yajima, S. Shimono, Y. Iwasaki, and Y. Hosokoshi
    Phys. Rev. B 104 L060411 2021 27th Aug.
    (preprint: arXiv:2108.12761)
  14. Field-Angle-Resolved Landscape of Non-Fermi-Liquid Behavior in the Quasi-Kagome Kondo Lattice CeRhSn
    Shunichiro Kittaka, Yohei Kono, Suguru Tsuda, Toshiro Takabatake, and Toshiro Sakakibara
    J. Phys. Soc. Jpn. 90 064703 2021 10th May
    (preprint: arXiv:1904.08663)
  15. Magnetic Phase Transitions of the 4f Skyrmion Compound EuPtSi Studied by Magnetization Measurements
    Toshiro Sakakibara, Shota Nakamura, Shunichiro Kittaka, Masashi Kakihana, Masato Hedo, Takao Nakama, and Yoshichika Onuki
    J. Phys. Soc. Jpn. 90 064701 2021 10th May
     ==【 2020 】==
  16. Thermal Hall Effects of Spins and Phonons in Kagome Antiferromagnet Cd-Kapellasite
    Masatoshi Akazawa, Masaaki Shimozawa, Shunichiro Kittaka, Toshiro Sakakibara, Ryutaro Okuma, Zenji Hiroi, Hyun-Yong Lee, Naoki Kawashima, Jung Hoon Han, and Minoru Yamashita
    Phys. Rev. X 10 041059 2020 23rd Dec.
    (preprint: arXiv:2006.02073)
  17. Kitaev Spin Liquid Candidate OsxCl3 Comprised of Honeycomb Nano-Domains
    K. Kataoka, D. Hirai, T. Yajima, D. Nishio-Hamane, R. Ishii, K.-Y. Choi, D. Wulferding, P. Lemmens, S. Kittaka, T. Sakakibara, H. Ishikawa, A. Matsuo, K. Kindo, and Z. Hiroi
    J. Phys. Soc. Jpn. 89 114709 2020 16th Oct.
    (preprint: arXiv:2009.07541)
  18. Fully gapped superconductivity without sign reversal in the topological superconductor PbTaSe2
    Yue Sun, Shunichiro Kittaka, Toshiro Sakakibara, Kazushige Machida, R. Sankar, Xiaofeng Xu, Nan Zhou, Xiangzhuo Xing, Zhixiang Shi, Sunseng Pyon, and Tsuyoshi Tamegai
    Phys. Rev. B 102 024517 2020 21st July
    (preprint: arXiv:2007.11364)
  19. Orientation of point nodes and non-unitary triplet pairing tuned by the easy-axis magnetization in UTe2
    Shunichiro Kittaka, Yusei Shimizu, Toshiro Sakakibara, Ai Nakamura, Dexin Li, Yoshiya Homma, Fuminori Honda, Dai Aoki, and Kazushige Machida
    Phys. Rev. Res. 2 032014(R) 2020 13th July
    (preprint: arXiv:2002.06385)
    This paper is OPEN ACESS. You can download it freely.
  20. Evidence for nematic superconductivity of topological surface states in PbTaSe2
    Tian Le, Yue Sun, Hui-Ke Jin, Liqiang Che, Lichang Yin, Jie Li, G. M. Pang, C. Q. Xu, L. X. Zhao, S. Kittaka, T. Sakakibara, K. Machida, R. Sankar, H. Q. Yuan, G. F. Chen, Xiaofeng Xu, Shiyan Li, Yi Zhou, and Xin Lu
    Sci. Bull. 65 1349 2020 30th Aug.
    (preprint: arXiv:1905.11177)
  21. Magnetic properties of a spin-2 antiferromagnet with metal-radical hybrid spins
    Y. Iwasaki, T. Okabe, N. Uemoto, Y. Kono, Y. Hosokoshi, S. Nakamura, S. Kittaka, T. Sakakibara, M. Hagiwara, T. Kawakami, and H. Yamaguchi
    Phys. Rev. B 101 174412 2020 7th May
  22. Synthesis and Magnetic Properties of M2+Ti4+ Substituted Ba12Fe28Ti15O84
    N. Yasuda, S. Kittaka, Y. Kono, T. Sakakibara, K. Kakizaki, and K. Kamishima
    J. Magn. Soc. Jpn. 44 70 2020 1st May
  23. Field-Orientation Effect on Ferro-Quadrupole Order in PrTi2Al20
    Shunichiro Kittaka, Takanori Taniguchi, Kazumasa Hattori, Shota Nakamura, Toshiro Sakakibara, Masashi Takigawa, Masaki Tsujimoto, Akito Sakai, Yosuke Matsumoto, and Satoru Nakatsuji
    J. Phys. Soc. Jpn. 89 043701 2020 9th March
    (preprint: arXiv:1912.11650)
  24. Magnetic properties of a spin-1/2 honeycomb lattice antiferromagnet
    Y. Kono, T. Okabe, N. Uemoto, Y. Iwasaki, Y. Hosokoshi, S. Kittaka, T. Sakakibara, and H. Yamaguchi
    Phys. Rev. B 101 014437 2020
  25. Heavy Fermion State of YbNi2Si3 without Local Inversion Symmetry
    Shota Nakamura, Kazushi Hyodo, Yuji Matsumoto, Yoshinori Haga, Hitoshi Sato, Shigenori Ueda, Kojiro Mimura, Katsuyoshi Saiki, Kosei Iso, Minoru Yamashita, Shunichiro Kittaka, Toshiro Sakakibara, and Shigeo Ohara
    J. Phys. Soc. Jpn. 89 024705 2020
     ==【 2019 】==
  26. Superconductivity in PtSbS with a Noncentrosymmetric Cubic Crystal Structure
    Ryosuke Mizutani, Yoshihiko Okamoto, Hayate Nagaso, Youichi Yamakawa, Hiroshi Takatsu, Hiroshi Kageyama, Shunichiro Kittaka, Yohei Kono, Toshiro Sakakibara, and Koshi Takenaka
    J. Phys. Soc. Jpn. 88 093709 2019
    (preprint: arXiv:1908.11507)
  27. Emergent critical phenomenon in spin-1/2 ferromagnetic-leg ladders: Quasi-one-dimensional Bose-Einstein condensate
    Yohei Kono, Shunichiro Kittaka, H. Yamaguchi, Y. Hosokoshi, and Toshiro Sakakibara
    Phys. Rev. B 100 054442 2019
    (preprint: arXiv:1908.09076)
  28. Fluctuation-Induced First-Order Transition and Tricritical Point in EuPtSi
    Toshiro Sakakibara, Shota Nakamura, Shunichiro Kittaka, Masashi Kakihana, Masato Hedo, Takao Nakama, and Yoshichika Onuki
    J. Phys. Soc. Jpn. 88 093701 2019
  29. Quasi-particle evidence for the nematic state above Tc in SrxBi2Se3
    Yue Sun, Shunichiro Kittaka, Toshiro Sakakibara, Kazushige Machida, Jinghui Wang, Jinsheng Wen, XiangZhuo Xing, Zhixiang Shi, and Tsuyoshi Tamegai
    Phys. Rev. Lett. 123 027002 2019
    (preprint: arXiv:1902.08903)
  30. S=1/2 ferromagnetic Heisenberg chain in a verdazyl-based complex
    N. Uemoto, Y. Kono, S. Kittaka, T. Sakakibara, T. Yajima, Y. Iwasaki, S. Miyamoto, Y. Hosokoshi, and H. Yamaguchi
    Phys. Rev. B 99 094418 2019
    (preprint: arXiv:1903.06896)
  31. Anisotropic magnetic-field response of quantum critical fluctuations in Ni-doped CeCoIn5
    Makoto Yokoyama, Kohei Suzuki, Shota Nakamura, Yohei Kono, Shunichiro Kittaka, and Toshiro Sakakibara
    Phys. Rev. B 99 054506 2019
  32. Unconventional field-induced spin gap in an S = 1/2 chiral staggered chain
    J. Liu, S. Kittaka, R. D. Johnson, T. Lancaster, J. Singleton, T. Sakakibara, Y. Kohama, J. van Tol, A. Ardavan, B. H. Williams, S. J. Blundell, Z. E. Manson, J. L. Manson, and P. A. Goddard
    Phys. Rev. Lett. 122 057207 2019
     ==【 2018 】==
  33. Field-induced quantum magnetism in the verdazyl-based charge-transfer salt [o-MePy-V-(p-Br)2]FeCl4
    Y. Iwasaki, T. Kida, M. Hagiwara, T. Kawakami, Y. Kono, S. Kittaka, T. Sakakibara, Y. Hosokoshi, and H. Yamaguchi
    Phys. Rev. B 98 224411 2018
    (preprint: arXiv:1812.08334)
  34. Metamagnetic crossover in the quasikagome Ising Kondo-lattice compound CeIrSn
    S. Tsuda, C. L. Yang, Y. Shimura, K. Umeo, H. Fukuoka, Y. Yamane, T. Onimaru, T. Takabatake, N. Kikugawa, T. Terashima, H. T. Hirose, S. Uji, S. Kittaka, and T. Sakakibara
    Phys. Rev. B 98 155147 2018
  35. Low-Temperature Magnetization Measurements with Precise Two-Axis Alignment of the Sample Orientation
    Shota Nakamura, Akira Kasahara, Shunichiro Kittaka, Yohei Kono, Yoshichika Onuki, and Toshiro Sakakibara
    J. Phys. Soc. Jpn. 87 114001 2018
  36. Field-enhanced quantum fluctuation in S=1/2 frustrated square lattice
    H. Yamaguchi, Y. Sasaki, T. Okubo, M. Yoshida, T. Kida, M. Hagiwara, Y. Kono, S. Kittaka, T. Sakakibara, M. Takigawa, Y. Iwasaki, and Y. Hosokoshi
    Phys. Rev. B 98 094402 2018
    (preprint: arXiv:1808.06812)
  37. Disorder-sensitive node-like small gap in FeSe
    Yue Sun, Shunichiro Kittaka, Shota Nakamura, Toshiro Sakakibara, Peng Zhang, Shik Shin, Koki Irie, Takuya Nomoto, Kazushige Machida, Jingting Chen, and Tsuyoshi Tamegai
    Phys. Rev. B 98 064505 2018
    (preprint: arXiv:1808.05369)
  38. Searching for gap zeros in Sr2RuO4 via field-angle-dependent specific-heat measurement
    Shunichiro Kittaka, Shota Nakamura, Toshiro Sakakibara, Naoki Kikugawa, Taichi Terashima, Shinya Uji, Dmitry A. Sokolov, Andrew P. Mackenzie, Koki Irie, Yasumasa Tsutsumi, Katsuhiro Suzuki, and Kazushige Machida
    J. Phys. Soc. Jpn. 87 093703 2018
    (preprint: arXiv:1807.08909)
    This paper is OPEN SELECT. You can download it freely.
  39. Field-rotational magnetocaloric effect: a new experimental technique for accurate measurement of the anisotropic magnetic entropy
    Shunichiro Kittaka, Shota Nakamura, Hiroaki Kadowaki, Hiroshi Takatsu, and Toshiro Sakakibara
    J. Phys. Soc. Jpn. 87 073601 2018
    (preprint: arXiv:1805.07940)
    This paper is OPEN SELECT. You can download it freely.
  40. Quasi-one-dimensional Bose-Einstein condensation in the spin-1/2 ferromagnetic-leg ladder 3-I-V
    Y. Kono, S. Kittaka, H. Yamaguchi, Y. Hosokoshi, and T. Sakakibara
    Phys. Rev. B 97 100406(R) 2018
    (preprint: arXiv:1803.10388)
     ==【 2017 】==
  41. Gap structure of FeSe determined by angle-resolved specific heat measurements in applied rotating magnetic field
    Yue Sun, Shunichiro Kittaka, Shota Nakamura, Toshiro Sakakibara, Koki Irie, Takuya Nomoto, Kazushige Machida, Jingting Chen, and Tsuyoshi Tamegai
    Phys. Rev. B 96 220505(R) 2017
    (preprint: arXiv:1707.00547)
  42. Randomness-induced quantum spin liquid on honeycomb lattice
    Hironori Yamaguchi, Masataka Okada, Yohei Kono, Shunichiro Kittaka, Toshiro Sakakibara, Toshiki Okabe, Yoshiki Iwasaki, and Yuko Hosokoshi
    Sci. Rep. 7 16144 2017
    ** Press release [here] **
  43. Magnetic Properties and Magnetic Phase Diagrams of Trigonal DyNi3Ga9
    Hiroki Ninomiya, Yuji Matsumoto, Shota Nakamura, Yohei Kono, Shunichiro Kittaka, Toshiro Sakakibara, Katsuya Inoue, and Shigeo Ohara
    J. Phys. Soc. Jpn. 86 124704 2017
  44. Quasiparticle Excitations and Evidence for Superconducting Double Transitions in Monocrystalline U0.97Th0.03Be13
    Yusei Shimizu, Shunichiro Kittaka, Shota Nakamura, Toshiro Sakakibara, Dai Aoki, Yoshiya Homma, Ai Nakamura, and Kazushige Machida
    Phys. Rev. B 96 100505(R) 2017
    (preprint: arXiv:1709.00128)
    This paper was selected for an Editors' Suggestion.
  45. Wing structure in the phase diagram of the Ising Ferromagnet URhGe close to its tricritical point investigated by angle-resolved magnetization measurements
    Shota Nakamura, Toshiro Sakakibara, Yusei Shimizu, Shunichiro Kittaka, Yohei Kono, Yoshinori Haga, Jiří Pospíšil, and Etsuji Yamamoto
    Phys. Rev. B 96 094411 2017
    (preprint: arXiv:1709.00135)
    This paper was selected for an Editors' Suggestion.
  46. Fully gapped superconductivity with no sign change in the prototypical heavy-fermion CeCu2Si2
    T. Yamashita, T. Takenaka, Y. Tokiwa, J. A. Wilcox, Y. Mizukami, D. Terazawa, Y. Kasahara, S. Kittaka, T. Sakakibara, M. Konczykowski, S. Seiro, H. S. Jeevan, C. Geibel, C. Putzke, T. Onishi, H. Ikeda, A. Carrington, T. Shibauchi, and Y. Matsuda
    Sci. Adv. 3 e1601667 2017
    (preprint: arXiv:1703.02800)
  47. Thermodynamic Investigation of Metamagnetic Transitions and Partial Disorder in the Quasi-Kagome Kondo Lattice CePdAl
    Kenji Mochidzuki, Yusei Shimizu, Akihiro Kondo, Shota Nakamura, Shunichiro Kittaka, Yohei Kono, Toshiro Sakakibara, Yoichi Ikeda, Yosikazu Isikawa, and Koichi Kindo
    J. Phys. Soc. Jpn. 86 034709 2017
    (preprint: arXiv:1611.07679)
  48. Structural, Magnetic, and Superconducting Properties of Caged Compounds ROs2Zn20 (R = La, Ce, Pr, and Nd)
    Kazuhei Wakiya, Takahiro Onimaru, Keisuke T. Matsumoto, Yu Yamane, Naohiro Nagasawa, Kazunori Umeo, Shunichiro Kittaka, Toshiro Sakakibara, Yoshitaka Matsushita, and Toshiro Takabatake
    J. Phys. Soc. Jpn. 86 034707 2017
  49. Magnetic properties of the S=1/2 honeycomb lattice antiferromagnet 2-Cl-3,6-F2-V
    Toshiki Okabe, Hironori Yamaguchi, Shunichiro Kittaka, Toshiro Sakakibara, Toshio Ono, and Yuko Hosokoshi
    Phys. Rev. B 95 075120 2017
     ==【 2016 】==
  50. Thermodynamic study of gap structure and pair-breaking effect by magnetic field in the heavy-fermion superconductor CeCu2Si2
    Shunichiro Kittaka, Yuya Aoki, Yasuyuki Shimura, Toshiro Sakakibara, Silvia Seiro, Christoph Geibel, Frank Steglich, Yasumasa Tsutsumi, Hiroaki Ikeda, and Kazushige Machida
    Phys. Rev. B 94 054514 2016
    (preprint: arXiv:1608.00680)
  51. Quadrupole-driven non-Fermi-liquid and magnetic-field-induced heavy fermion states in a non-Kramers doublet system
    T. Onimaru, K. Izawa, K. T. Matsumoto, T. Yoshida, Y. Machida, T. Ikeura, K. Wakiya, K. Umeo, S. Kittaka, K. Araki, T. Sakakibara, and T. Takabatake
    Phys. Rev. B 94 075134 2016
    (preprint: arXiv:1606.09571)
  52. Omni-directional measurements of angle-resolved heat capacity for complete detection of superconducting gap structure in the heavy-fermion antiferromagnet UPd2Al3
    Yusei Shimizu, Shunichiro Kittaka, Toshiro Sakakibara, Yasumasa Tsutsumi, Takuya Nomoto, Hiroaki Ikeda, Kazushige Machida, Yoshiya Homma, and Dai Aoki
    Phys. Rev. Lett. 117 037001 2016
    This paper was selected for an Editors' Suggestion.
  53. Quadrupole Order in the Frustrated Pyrochlore Tb2+xTi2-xO7+y
    H. Takatsu, S. Onoda, S. Kittaka, A. Kasahara, Y. Kono, T. Sakakibara, Y. Kato, B. Fåk, J. Ollivier, J. W. Lynn, T. Taniguchi, M. Wakita, and H. Kadowaki
    Phys. Rev. Lett. 116 217201 2016
    (preprint: arXiv:1506.04545)
    ** Press release [here] **
  54. Unconventional S=2 alternating chain realized by a metal-radical hybrid-spin approach
    H. Yamaguchi, Y. Shinpuku, Y. Kono, S. Kittaka, T. Sakakibara, M. Hagiwara, T. Kawakami, K. Iwase, T. Ono, and Y. Hosokoshi
    Phys. Rev. B 93 115145 2016
    (preprint: arXiv:1503.05633)
  55. Possible observation of highly itinerant quantum magnetic monopoles in the frustrated pyrochlore Yb2Ti2O7
    Y. Tokiwa, T. Yamashita, M. Udagawa, S. Kittaka, T. Sakakibara, D. Terazawa, Y. Shimoyama, T. Terashima, Y. Yasui, T. Shibauchi, and Y. Matsuda
    Nat. Commun. 7 10807 2016
    (preprint: arXiv:1504.02199)
  56. Evidence for chiral d-wave superconductivity in URu2Si2 from the field-angle variation of its specific heat
    Shunichiro Kittaka, Yusei Shimizu, Toshiro Sakakibara, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Onuki, Yasumasa Tsutsumi, Takuya Nomoto, Hiroaki Ikeda, and Kazushige Machida
    J. Phys. Soc. Jpn. 85 033704 2016
    (preprint: arXiv:1511.06060)
    This paper was selected for an Editors' Choice. You can download it freely (OPEN SELECT).
     ==【 2015 】==
  57. Experimental Realization of a Quantum Pentagonal Lattice
    H. Yamaguchi, T. Okubo, S. Kittaka, T. Sakakibara, K. Araki, K. Iwase, N. Amaya, T. Ono, and Y. Hosokoshi
    Sci. Rep. 5 15327 2015
    ** Press release [here] **
  58. First-order ferromagnetic transition of quantum spin ice system Yb2Ti2O7
    Yukio Yasui, Noriaki Hamachi, Yohei Kono, Shunichiro Kittaka, and Toshiro Sakakibara
    SPIN 05 1540002 2015
  59. Field-Orientation Dependence of Low-Energy Quasiparticle Excitations in the Heavy-Electron Superconductor UBe13
    Yusei Shimizu, Shunichiro Kittaka, Toshiro Sakakibara, Yoshinori Haga, Etsuji Yamamoto, Hiroshi Amitsuka, Yasumasa Tsutsumi, and Kazushige Machida
    Phys. Rev. Lett. 114 147002 2015
    (preprint: arXiv:1411.1504)
  60. Quantum phase near the saturation field in the S=1/2 frustrated spin ladder
    H. Yamaguchi, H. Miyagai, Y. Kono, S. Kittaka, T. Sakakibara, K. Iwase, T. Ono, T. Shimokawa, and Y. Hosokoshi
    Phys. Rev. B 91 125104 2015
  61. S=1/2 ferromagnetic-antiferromagnetic alternating Heisenberg chain in a zinc-verdazyl complex
    Hironori Yamaguchi, Yasuhiro Shinpuku, Tokuro Shimokawa, Kenji Iwase, Toshio Ono, Yohei Kono, Shunichiro Kittaka, Toshiro Sakakibara, and Yuko Hosokoshi
    Phys. Rev. B 91 085117 2015
     ==【 2014 】==
  62. Sharp Magnetization Jump at the First-Order Superconducting Transition in Sr2RuO4
    Shunichiro Kittaka, Akira Kasahara, Toshiro Sakakibara, Daisuke Shibata, Shingo Yonezawa, Yoshiteru Maeno, Kenichi Tenya, and Kazushige Machida
    Phys. Rev. B 90 220502(R) 2014
    (preprint: arXiv:1410.0798)
  63. Spin-Chirality-Driven Ferroelectricity on a Perfect Triangular Lattice Antiferromagnet
    H. Mitamura, R. Watanuki, K. Kaneko, N. Onozaki, Y. Amou, S. Kittaka, R. Kobayashi, Y. Shimura, I. Yamamoto, K. Suzuki, S. Chi, and T. Sakakibara
    Phys. Rev. Lett. 113 147202 2014
    ** Press release [here] **
  64. Field-induced incommensurate phase in the strong-rung spin ladder with ferromagnetic legs
    H. Yamaguchi, H. Miyagai, M. Yoshida, M. Takigawa, K. Iwase, T. Ono, N. Kase, K. Araki, S. Kittaka, T. Sakakibara, T. Shimokawa, T. Okubo, K. Okunishi, A. Matsuo, and Y. Hosokoshi
    Phys. Rev. B 89 220402(R) 2014
    (preprint: arXiv:1406.2231)
  65. Spin-Orbital Entanglement and the Breakdown of Singlets and Triplets in Sr2RuO4 Revealed by Spin- and Angle-Resolved Photoemission Spectroscopy
    C. N. Veenstra, Z.-H. Zhu, M. Raichle, B. M. Ludbrook, A. Nicolaou, B. Slomski, G. Landolt, S. Kittaka, Y. Maeno, J. H. Dil, I. S. Elfimov, M. W. Haverkort, and A. Damascelli
    Phys. Rev. Lett. 112 127002 2014
    (preprint: arXiv:1303.5444)
  66. Fine-Tuning of Magnetic Interactions in Organic Spin Ladders
    Hironori Yamaguchi, Hirotsugu Miyagai, Tokuro Shimokawa, Kenji Iwase, Toshio Ono, Yohei Kono, Naoki Kase, Koji Araki, Shunichiro Kittaka, Toshiro Sakakibara, Takashi Kawakami, Kouichi Okunishi, and Yuko Hosokoshi
    J. Phys. Soc. Jpn. 83 033707 2014
    (preprint: arXiv:1402.2743)
  67. Multiband superconductivity with unexpected deficiency of nodal quasiparticles in CeCu2Si2
    Shunichiro Kittaka, Yuya Aoki, Yasuyuki Shimura, Toshiro Sakakibara, Silvia Seiro, Christoph Geibel, Frank Steglich, Hiroaki Ikeda, and Kazushige Machida
    Phys. Rev. Lett. 112 067002 2014
    (preprint: arXiv:1307.3499)
  68. Thermodynamic study of nodal structure and multiband superconductivity of KFe2As2
    Shunichiro Kittaka, Yuya Aoki, Naoki Kase, Toshiro Sakakibara, Taku Saito, Hideto Fukazawa, Yoh Kohori, Kunihiro Kihou, Chul Ho Lee, Akira Iyo, Hiroshi Eisaki, Kazuhiko Deguchi, Noriaki K. Sato, Yasumasa Tsutsumi, and Kazushige Machida
    J. Phys. Soc. Jpn. 83 013704 2014
    (preprint: arXiv:1312.2660)
    This paper is OPEN SELECT. You can download it freely.
     ==【 2013 】==
  69. Quasi-one-dimensional S=1/2 Heisenberg antiferromagnetic chain consisting of the organic radical p-Br-V
    Kenji Iwase, Hironori Yamaguchi, Toshio Ono, Yuko Hosokoshi, Tokuro Shimokawa, Yohei Kono, Shunichiro Kittaka, Toshiro Sakakibara, Akira Matsuo, and Koichi Kindo
    Phys. Rev. B 88 184431 2013
  70. Various regimes of quantum behavior in an S=1/2 Heisenberg antiferromagnetic chain with fourfold periodicity
    H. Yamaguchi, T. Okubo, K. Iwase, T. Ono, Y. Kono, S. Kittaka, T. Sakakibara, A. Matsuo, K. Kindo, and Y. Hosokoshi
    Phys. Rev. B 88 174410 2013
    (preprint: arXiv:1311.4763)
  71. Verification of anisotropic s-wave superconducting gap structure in CeRu2 from low-temperature field-angle-resolved specific heat measurements
    Shunichiro Kittaka, Toshiro Sakakibara, Masato Hedo, Yoshichika Ōnuki, and Kazushige Machida
    J. Phys. Soc. Jpn. 82 123706 2013
    (preprint: arXiv:1311.4050)
    This paper is OPEN SELECT. You can download it freely.
  72. Unconventional magnetic and thermodynamic properties of S = 1/2 spin ladder with ferromagnetic legs
    H. Yamaguchi, K. Iwase, T. Ono, T. Shimokawa, H. Nakano, Y. Shimura, N. Kase, S. Kittaka, T. Sakakibara, T. Kawakami, and Y. Hosokoshi
    Phys. Rev. Lett. 110 157205 2013
  73. Determining the Surface-To-Bulk Progression in the Normal-State Electronic Structure of Sr2RuO4 by Angle-Resolved Photoemission and Density Functional Theory
    C. N. Veenstra, Z.-H. Zhu, B. Ludbrook, M. Capsoni, G. Levy, A. Nicolaou, J. A. Rosen, R. Comin, S. Kittaka, Y. Maeno, I. S. Elfimov and A. Damascelli
    Phys. Rev. Lett. 110 097004 2013
    (preprint: arXiv:1205.4248)
  74. Anomalous Field-Angle Dependence of the Specific Heat of Heavy-Fermion Superconductor UPt3
    Shunichiro Kittaka, Koji An, Toshiro Sakakibara, Yoshinori Haga, Etsuji Yamamoto, Noriaki Kimura, Yoshichika Onuki, and Kazushige Machida
    J. Phys. Soc. Jpn. 82 024707 2013
    (preprint: arXiv:1212.3038)
    This paper was selected for an Editors' Choice.
     ==【 2012 】==
  75. Simultaneous superconducting and antiferroquadrupolar transitions in PrRh2Zn20
    T. Onimaru, N. Nagasawa, K. T. Matsumoto, K. Wakiya, K. Umeo, S. Kittaka, T. Sakakibara, Y. Matsushita, and T. Takabatake
    Phys. Rev. B 86 184426 2012
    (preprint: arXiv:1211.3183)
  76. Superconducting gap structure of CeIrIn5 from field-angle-resolved measurements of its specific heat
    Shunichiro Kittaka, Yuya Aoki, Toshiro Sakakibara, Akito Sakai, Satoru Nakatsuji, Yasumasa Tsutsumi, Masanori Ichioka and Kazushige Machida
    Phys. Rev. B 85 060505(R) 2012
    (preprint: arXiv:1111.5388)
    This paper was selected for an Editors' Suggestion & a Synopsis in Physics.
     ==【 before 2011 】==
  77. Higher-Tc superconducting phase in Sr2RuO4 induced by uniaxial pressure
    Shunichiro Kittaka, Haruka Taniguchi, Shingo Yonezawa, Hiroshi Yaguchi, and Yoshiteru Maeno
    Phys. Rev. B 81 180510(R) 2010
    (preprint: arXiv:1004.3705)
  78. Angular dependence of the upper critical field of Sr2RuO4
    S. Kittaka, T. Nakamura, Y. Aono, S. Yonezawa, K. Ishida, and Y. Maeno
    Phys. Rev. B 80 174514 2009
    (preprint: arXiv:0906.2513)
  79. Large Enhancement of 3-K Phase Superconductivity in the Sr2RuO4-Ru Eutectic System by Uniaxial Pressure
    Shunichiro Kittaka, Hiroshi Yaguchi, and Yoshiteru Maeno
    J. Phys. Soc. Jpn. 78 103705 2009
    (preprint: arXiv:0906.2514)
  80. Atomic structure of functional interfaces in Sr2RuO4/Sr3Ru2O7 eutectic crystals
    R. Ciancio, J. Börjesson, H. Pettersson, S. Lopatin, R. Fittipaldi, A. Vecchione, S. Kittaka, Y. Maeno, S. Pace, and E. Olsson
    App. Phys. Lett. 95 142507 2009
  81. Towards intrinsic functionalities of bilayered ruthenate Sr3Ru2O7
    R. Ciancio, J. Börjesson, H. Pettersson, R. Fittipaldi, D. Zola, A. Vecchione, M. Polichetti, S. Kittaka, Y. Maeno, S. Pace, and E. Olsson
    Phys. Rev. B 80 054110 2009
  82. Spatial Development of Superconductivity in the Sr2RuO4-Ru Eutectic System
    Shunichiro Kittaka, Taketomo Nakamura, Hiroshi Yaguchi, Shingo Yonezawa, and Yoshiteru Maeno
    J. Phys. Soc. Jpn. 78 064703 2009
    (preprint: arXiv:0905.2009)
  83. Superconductivity in Sr2RuO4-Sr3Ru2O7 eutectic crystals
    R. Fittipaldi, A. Vecchione, R. Ciancio, S. Pace, M. Cuoco, D. Stornaiuolo, D. Born, F. Tafuri, E. Olsson, S. Kittaka, H. Yaguchi, and Y. Maeno
    Europhys. Lett. 83 27007 2008
    (preprint: arXiv:0712.1847)
  84. Multiple superconducting transitions in the Sr3Ru2O7 region of Sr3Ru2O7-Sr2RuO4 eutectic crystals
    S. Kittaka, S. Fusanobori, S. Yonezawa, H. Yaguchi, Y. Maeno, R. Fittipaldi, and A. Vecchione
    Phys. Rev. B 77 214511 2008
    (preprint: arXiv:cond-mat/0607151)

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Review papers

  1. Angle-resolved heat capacity of heavy fermion superconductors
    Toshiro Sakakibara, Shunichiro Kittaka, and Kazushige Machida
    Rep. Prog. Phys. 79 094002 2016
    Invited paper in a special issue on Strongly Correlated Electron Systems.
  2. Evaluation of Spin-Triplet Superconductivity in Sr2RuO4
    Yoshiteru Maeno, Shunichiro Kittaka, Takuji Nomura, Shingo Yonezawa, Kenji Ishida
    J. Phys. Soc. Jpn. 81 011009 2012
    (preprint: arXiv:1112.1620)
    JPSJ Special Topics. You can download it freely.

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Proceedings

  1. Magnetization study on the ising ferromagnet URhGe with high-precision angle-resolved magnetic field near the hard axis
    Shota Nakamura, Toshiro Sakakibara, Yusei Shimizu, Shunichiro Kittaka, Yohei Kono, Yoshinori Haga, Jiří Pospíšil, and Etsuji Yamamoto
    Prog. Nucl. Sci. Technol. 5 123 2018
  2. Investigation of the tricritical point of the ising ferromagnet URhGe by angle-resolved measurements
    Shota Nakamura, Shunichiro Kittaka, Toshiro Sakakibara, Yusei Shimizu, Yohei Kono, Yoshinori Haga, Jiří Pospíšil, and Etsuji Yamamoto
    AIP Advances 8 101305 2018
  3. Superconducting symmetries and magnetic responses of uranium heavy-fermion systems UBe13 and UPd2Al3
    Yusei Shimizu, Shunichiro Kittaka, Toshiro Sakakibara, and Dai Aoki
    Physica B 536 553 2018
  4. Thermodynamic properties of quadrupolar states in the frustrated pyrochlore magnet Tb2Ti2O7
    H. Takatsu, T. Taniguchi, S. Kittaka, T. Sakakibara, and H. Kadowaki
    J. Phys.: Conf. Ser. 828 012007 2017
    (preprint: arXiv:1704.07119)
  5. Nodal gap structure of the heavy-fermion superconductor URu2Si2 revealed by field-angle-dependent specific-heat measurements
    Shunichiro Kittaka, Yusei Shimizu, Toshiro Sakakibara, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Onuki, Yasumasa Tsutsumi, Takuya Nomoto, Hiroaki Ikeda, and Kazushige Machida
    J. Phys.: Conf. Ser. 807 052001 2017
  6. Comparison with Ground States of Frustrated Quantum Spin Chain Systems A2Cu2Mo3O12 (A=Rb and Cs)
    Akio Fujimura, Yukio Yasui, Yudai Yanagisawa, Ichiro Terasaki, Yohei Kono, Shunichiro Kittaka, and Toshiro Sakakibara
    IEEE Trans. Magn. 52 1100503 2016
  7. Ferromagnetic ordered phase of quantum spin ice system Yb2Ti2O7 under [001] magnetic field
    N. Hamachi, Y. Yasui, K. Araki, S. Kittaka, and T. Sakakibara
    AIP Adv. 6 055707 2016
  8. Quadrupole order in the frustrated pyrochlore magnet Tb2Ti2O7
    H. Takatsu, T. Taniguchi, S. Kittaka, T. Sakakibara, and H. Kadowaki
    J. Phys.: Conf. Ser. 683 012022 2016
    (preprint: arXiv:1602.01806)
  9. First-order superconducting transition of Sr2RuO4 investigated by magnetization and magnetic torque
    Shunichiro Kittaka, Akira Kasahara, Toshiro Sakakibara, Daisuke Shibata, Shingo Yonezawa, Yoshiteru Maeno, Kenichi Tenya, and Kazushige Machida
    J. Magn. Magn. Mater. 400 81 2016
  10. Heat capacity measurements on UBe13 in rotated magnetic fields: anisotropic response in the normal state and the absence of nodal quasiparticles
    Yusei Shimizu, Shunichiro Kittaka, Toshiro Sakakibara, Yoshinori Haga, Etsuji Yamamoto, Hiroshi Amitsuka, Yasumasa Tsutsumi, and Kazushige Machida
    J. Magn. Magn. Mater. 400 52 2016
  11. Field-induced phase transitions and magnetoferroelectricity in the perfect triangular lattice antiferromagnet RbFe(MoO4)2 in a vertical magnetic field
    Hiroyuki Mitamura, Ryuta Watanuki, Norimichi Onozaki, Yuta Amou, Yohei Kono, Shunichiro Kittaka, Yasuyuki Shimura, Isao Yamamoto, Kazuya Suzuki, and Toshiro Sakakibara
    J. Magn. Magn. Mater. 400 70 2016
  12. Low temperature magnetic properties of a new quasi-one-dimensional organic magnet α-2-Cl-4-F-V
    Yohei Kono, Shunichiro Kittaka, Toshiro Sakakibara, Hironori Yamaguchi, and Yuko Hosokoshi
    Phys. Procedia 75 679 2015
  13. Antiferromagnetic transition of the caged compound TmTi2Al20
    Naoki Kase, Yasuyuki Shimura, Shunichiro Kittaka, Toshiro Sakakibara, Satoru Nakatsuji, Tomohito Nakano, Naoya Takeda, and Jun Akimitsu
    J. Phys.: Conf. Ser. 592 012052 2015
  14. Anisotropic superconductivity of the caged compound Y5Rh6Sn18 with unusual normal-state electrical resistivity
    Naoki Kase, Shunichiro Kittaka, Toshiro Sakakibara, and Jun Akimitsu
    JPS Conf. Proc. 3 015042 2014
  15. Singlet-triplet crossover in the two-dimensional dimer spin system YbAl3C3
    Shunichiro Kittaka, Tomoyoshi Sugiyama, Yasuyuki Shimura, Toshiro Sakakibara, Saori Matsuda, and Akira Ochiai
    J. Korean Phys. Soc. 62 2088 2013
    (preprint: arXiv:1307.3494)
  16. Searching for the in-plane anisotropy of the specific heat of UPt3 in rotating fields
    S. Kittaka, K. An, T. Sakakibara, Y. Haga, E. Yamamoto, N. Kimura, Y. Onuki, and K. Machida
    J. Phys.: Conf. Ser. 391 012031 2012
  17. Probing Spin Chirality of the Equilateral Triangular-Lattice Antiferromagnet RbFe(MoO4)2 through Multiferroicity
    H. Mitamura, R. Watanuki, N. Onozaki, Y. Shimura, S. Kittaka, T. Sakakibara, and K. Suzuki
    J. Phys.: Conf. Ser. 391 012099 2012
  18. Field-temperature phase diagram of superconductivity in Sr2RuO4-Ru under out-of-plane uniaxial pressure
    H. Taniguchi, S Kittaka, S. Yonezawa, H. Yaguchi, and Y. Maeno
    J. Phys.: Conf. Ser. 391 012108 2012
  19. Field dependence of the specific heat in a heavy-fermion superconductor CeIrIn5
    Yuya Aoki, Shunichiro Kittaka, Toshiro Sakakibara, Akito Sakai, Satoru Nakatsuji, Yasumasa Tsutsumi , Masanori Ichioka, and Kazushige Machida
    J. Phys. Soc. Jpn. 81 SB014 2012
  20. Superconducting Gap Structure of the Cage Compound Sc5Rh6Sn18
    Naoki Kase, Shunichiro Kittaka, Toshiro Sakakibara, and Jun Akimitsu
    J. Phys. Soc. Jpn. 81 SB016 2012
  21. Nonmagnetic ground states and phase transitions in the caged compounds PrT2Zn20 (T = Ru, Rh and Ir)
    T. Onimaru, K. T. Matsumoto, N. Nagasawa, Y. F. Inoue, K. Umeo, R. Tamura, K. Nishimoto, S. Kittaka, T. Sakakibara and T. Takabatake
    J. Phys.: Condens. Matter 24 294207 2012
  22. Uniaxial pressure effect on the superconductivity in the Sr3Ru2O7 region of the Sr3Ru2O7-Sr2RuO4 eutectic system
    S. Kittaka, H. Yaguchi, Y. Maeno, R. Fittipaldi, and A. Vecchione
    Physica C 470 S728 2010
  23. Enhancement of interfacial superconductivity in the eutectic system Sr2RuO4-Ru by uniaxial pressure
    H. Yaguchi, S. Kittaka, and Y. Maeno
    J. Phys.: Conf. Ser. 150 052285 2009
  24. Evidence for the Sr2RuO4 intercalations in the Sr3Ru2O7 region of the Sr3Ru2O7-Sr2RuO4 eutectic system
    S. Kittaka, S. Yonezawa, H. Yaguchi, Y. Maeno, R. Fittipaldi, A. Vecchione, J. -F. Mercure, A. Gibbs, R. S. Perry, and A. P. Mackenzie
    J. Phys.: Conf. Ser. 150 052113 2009
    (preprint: arXiv:0808.0434)
  25. Unusual temperature dependence of the in-plane critical field in Sr2RuO4
    S. Kittaka, T. Nakamura, Y. Aono, S. Yonezawa, K. Ishida, and Y. Maeno
    J. Phys.: Conf. Ser. 150 052112 2009
  26. Superconducting behaviour via percolation in Sr2RuO4-Sr3Ru2O7 eutectic crystals
    R. Fittipaldi, M. Cuoco, V. Granata, C. Noce, S. Pace, D. Stornaiuolo, D. Born, F. Tafuri, S. Kittaka, Y. Maeno, and A. Vecchione
    J. Phys.: Conf. Ser. 150 052056 2009
  27. Structure, morphology and composition of superconducting Sr2RuO4-Sr3Ru2O7 eutectic crystals
    R. Fittipaldi, S. Fusanobori, S. Kittaka, H. Yaguchi, J. Hooper, A. Vecchione, and Y. Maeno
    Physica C 460-462 524 2007
  28. AC susceptibility of Sr2RuO4-Sr3Ru2O7 eutectics: Dependence on AC field strength and frequency
    S. Fusanobori, S. Kittaka, H. Yaguchi, R. Fittipaldi, A. Vecchione, and Y. Maeno
    J. Magn. Magn. Mater. 310 643 2007

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    新学術領域研究「J-Physics：多極子伝導系の物理」News letter 第9号 49 2020
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    新学術領域研究「J-Physics：多極子伝導系の物理」News letter 第6号 95-96 2018
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  10. 角度分解磁場中比熱測定から切り拓く重い電子系の超伝導
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