Publications

■2022年

[1] H. Oike, T. Ebino, T. Koretsune, A. Kikkawa, M. Hirschberger, Y. Taguchi, Y. Tokura, and F. Kagawa
"Topological Nernst effect emerging from real-space gauge field and thermal fluctuations in a magnetic skyrmion lattice"
Phys. Rev. B 106, 214425 (2022).

[2] T. Sato, W. Koshibae, A. Kikkawa, Y. Taguchi, N. Nagaosa, Y. Tokura, and F. Kagawa
"Nonthermal current-induced transition from skyrmion lattice to nontopological magnetic phase in spatially confined MnSi"
Phys. Rev. B 106, 144425 (2022).  同誌"Editors' Suggestion"に選出.

[3] M. Wang, K. Matsuura, M. Nakamura, M. Sawada, M. Kawasaki, and F. Kagawa
"Magnetic-field control of insulator-metal crossover in cobaltite films via thermal-activated percolation"
Phys. Rev. B 106, 155135 (2022).

[4] R. Yamada, J. Fujioka, M. Kawamura, S. Sakai, M. Hirayama, R. Arita, T. Okawa, D. Hashizume, T. Sato, F. Kagawa, R. Kurihara, Y. Tokunaga, and Y. Tokura
"Field-induced multiple metal-insulator crossovers of correlated Dirac electrons of perovskite CaIrO3"
NPJ Quantum. Mat. 7, 13 (2022).

[5] M. Onose, H. Takahashi, T. Saito, T. Kamiyama, R. Takahashi, H. Wadati, S. Kitao, M. Seto, H. Sagayama, Y. Yamasaki, T. Sato, F. Kagawa, and S. Ishiwata
"Spin-charge coupling and decoupling in perovskite-type iron oxides (Sr1-xBax)2/3La1/3FeO3"
Phys. Rev. Mat. 6, 094401 (2022).

[6] K. Karube, V. Ukleev, F. Kagawa, Y. Tokura, Y. Taguchi and J. S. White
"Unveiling the anisotropic fractal magnetic domain structure in bulk crystals of antiskyrmion host (Fe,Ni,Pd)3P by small-angle neutron scattering"
J. Appl. Cryst. 55, (2022).

■2021年

[1] H. Oike, K. Takeda, M. Kamitani, Y. Tokura, and F. Kagawa
"Real-space observation of emergent complexity of phase evolution in micrometer-sized IrTe2 crystals"
Phys. Rev. Lett. 127, 145701 (2021).

[2] X.Z. Yu, F. Kagawa, S. Seki, M. Kubota, J. Masell, F. S. Yasin, K. Nakajima, M. Nakamura, M. Kawasaki, N. Nagaosa and Y. Tokura
"Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow"
Nat. Commun. 12, 5079 (2021).

[3] A. Kitaori, N. Kanazawa, T. Yokouchi, F. Kagawa, N. Nagaosa, and Y. Tokura
"Emergent electromagnetic induction beyond room temperature"
PNAS 118, e2105422118 (2021).

[4] K. Matsuura, H. Oike, V. Kocsis, T. Sato, Y. Tomioka, Y. Kaneko, M. Nakamura, Y. Taguchi, M. Kawasaki, Y. Tokura, and F. Kagawa
"Kinetic pathway facilitated by a phase competition to achieve a metastable electronic phase"
Phys. Rev. B 103, L041106 (2021).

[5] S. Imajo, A. Miyake, R. Kurihara, M. Tokunaga, K. Kindo, S. Horiuchi, and F. Kagawa
"Quantum transport of topological spin solitons in a one-dimensional organic ferroelectric"
Phys. Rev. B 103, L201117 (2021).

[6] T. Katsufuji, M. Miyake, M. Naka, M. Mochizuki, S. Kogo, T. Kajita, Y. Shimizu, M. Itoh, T. Hasegawa, S. Shimose, S. Noguchi, T. Saiki, T. Sato, and F. Kagawa
"Orbital and magnetic ordering and domain-wall conduction in ferrimagnet La5Mo4O16"
Phys. Rev. Research 3, 013105 (2021).

[7] K. Karube, L. Peng, J. Masell, X. Yu, F. Kagawa, Y. Tokura, and Y. Taguchi
"Room-temperature antiskyrmions and sawtooth surface textures in a non-centrosymmetric magnet with S4 symmetry"
Nat. Mat. 20, 335 (2021).

■2020年

[1] T. Sato, A. Kikkawa, Y. Taguchi, Y. Tokura, and F. Kagawa
"Mode locking phenomena of the current-induced skyrmion-lattice motion in microfabricated MnSi"
Phys. Rev. B 102, 180411 (2020).

[2] T. Yokouchi, F. Kagawa, M Hirschberger, Y. Otani, N. Nagaosa, and Y. Tokura
"Emergent electromagnetic induction in a helical-spin magnet"
Nature 586, 7828 (2020).

[3] R. Nishino, T.C. Fujita, F. Kagawa, M. Kawasaki
"Evolution of ferroelectricity in ultrathin PbTiO3 films as revealed by electric double layer gating"
Sci. Rep. 10, 10864 (2020).

[4] S. Inagaki, M. Nakamura, H. Hatada, R. Nishino, F. Kagawa, Y. Tokura, and M. Kawasaki
"Growth of visible-light-responsive ferroelectric SbSI thin films by molecular beam epitaxy"
Appl. Phys. Lett. 116, 072902 (2020).

[5] S. Seki, M. Garst, J. Waizner, R. Takagi, N.D. Khanh, Y. Okamura, K. Kondou, F. Kagawa, Y. Otani, and Y. Tokura
"Propagation dynamics of spin excitations along skyrmion strings"
Nat. Commun. 11, 256 (2020).

■2019年

[1] T. Sato, W. Koshibae, A. Kikkawa, T. Yokouchi, H. Oike, Y. Taguchi, N. Nagaosa, Y. Tokura, and F. Kagawa
"Slow steady flow of a skyrmion lattice in a confined geometry probed by resistance narrow-band noise"
Phys. Rev. B 100, 094410 (2019).

[2] M. Yoshida, T. Sato, F. Kagawa, Y. Iwasa
"Charge density wave dynamics in nonvolatile current-induced phase transition in 1T-TaS2"
Phys. Rev. B 100, 155125 (2019).

[3] M. T. Birch, R. Takagi, S. Seki, M. N. Wilson, F. Kagawa, A. Stefancic, G. Balakrishnan, R. Fan, P. Steadman, C. J. Ottley, M. Crisanti, R. Cubitt, T. Lancaster, Y. Tokura, and P. D. Hatton
"Increased lifetime of metastable skyrmions by controlled doping"
Phys. Rev. B 100, 0144425 (2019).  同誌"Editors' Suggestion"に選出.

[4] V. Kocsis, T. Nakajima, M. Matsuda, A. Kikkawa, Y. Kaneko, J. Takashima, K. Kakurai, T. Arima, F. Kagawa, Y. Tokunaga, Y. Tokura, and Y. Taguchi
"Magnetization-polarization cross-control near room temperature in hexaferrite single crystals"
Nat. Commun. 10, 1247 (2019).

[5] K. Yano, T. Hanebuchi, X.J. Zhang, Y. Itoh, Y. Uchida, T. Sato, K. Matsuura, F. Kagawa, F. Araoka, and T. Aida
"Supramolecular Polymerization in Liquid Crystalline Media: Toward Modular Synthesis of Multifunctional Core-Shell Columnar Liquid Crystals"
J. Am. Chem. Soc. 141, 10033 (2019).

■2018年

[1] H. Oike, M. Kamitani, Y. Tokura, and F. Kagawa
"Kinetic approach to superconductivity hidden behind a competing order"
Sci. Adv. 4, eaau3489 (2018).
Nature誌"Research Highlights"に選出: Nature 562, 11 October 2018

[2] R. Nishino, Y. Kozuka, F. Kagawa, M. Uchida, and M. Kawasaki
"Ferroelectric field control of charge density in oxide films with polarization reversal by electric double layer"
Appl. Phys. Lett. 113, 143501 (2018).

[3] T. Nakajima, V. Ukleev, K. Ohishi, H. Oike, F. Kagawa, S. Seki, K. Kakurai, Y. Tokura, and T. Arima
"Uniaxial-stress Effects on Helimagnetic Orders and Skyrmion Lattice in Cu2OSeO3"
J. Phys. Soc. Jpn. 87, 094709 (2018).

[4] T. Yokouchi, S. Hoshino, N. Kanazawa, A. Kikkawa, D. Morikawa, K. Shibata, T. Arima, Y. Taguchi, F. Kagawa, N. Nagaosa, and Y. Tokura
"Current-induced dynamics of skyrmion strings"
Sci. Adv. 4, eaat1115 (2018).

[5] X. Z. Yu, D. Morikawa, T. Yokouchi, K. Shibata, N. Kanazawa, F. Kagawa, T. Arima, and Y. Tokura
"Aggregation and collapse dynamics of skyrmions in a non-equilibrium state"
Nat. Phys. 14, 832 (2018).

[6] T. Nakajima, Y. Inamura, T. Ito, K. Ohishi, H. Oike, F. Kagawa, A. Kikkawa, Y. Taguchi, K. Kakurai, Y. Tokura, and T. Arima
"Phase-transition kinetics of magnetic skyrmions investigated by stroboscopic small-angle neutron scattering"
Phys. Rev. B 98, 014424 (2018).

[7] M. Nakamura, D. Morikawa, X. Z. Yu, F. Kagawa, T. Arima, Y. Tokura, and M. Kawasaki
"Emergence of Topological Hall Effect in Half-Metallic Manganite Thin Films by Tuning Perpendicular Magnetic Anisotropy"
J. Phys. Soc. Jpn. 87, 074704 (2018).  同誌"Editors' Choice"に選出.

[8] H. Oike, M. Suda, M. Kamitani, A. Ueda, H. Mori, Y. Tokura, H. M. Yamamoto, and F. Kagawa
"Size effects on supercooling phenomena in strongly correlated electron systems: IrTe2 and θ-(BEDT-TTF)2RbZn(SCN)4"
Phys. Rev. B 97, 085102 (2018).  同誌"Editors' Suggestion"に選出.

[9] R. Nishino, Y. Kozuka, M. Uchida, F. Kagawa, and M. Kawasaki
"Electrical conduction on the surface of ferroelectric PbTiO3 thin film induced by electrolyte gating"
Appl. Phys. Lett. 112, 051602 (2018).

■2017年

[1] N. Kanazawa, J. S. White, H. M. Rønnow, C. D. Dewhurst, D. Morikawa, K. Shibata, T. Arima, F. Kagawa, A. Tsukazaki, Y. Kozuka, M. Ichikawa, M. Kawasaki, and Y. Tokura
"Topological spin-hedgehog crystals of a chiral magnet as engineered with magnetic anisotropy"
Phys. Rev, B 96, 220414(R) (2017).

[2] S. Seki, Y. Okamura, K. Shibata, R. Takagi, N. D. Khanh, F. Kagawa, T. Arima, and Y. Tokura
"Stabilization of magnetic skyrmions by uniaxial tensile strain"
Phys. Rev, B 96, 220404(R) (2017).

[3] K. Yasuda, M. Mogi, R. Yoshimi, A. Tsukazaki, K.S. Takahashi, M. Kawasaki, F. Kagawa, and Y. Tokura
"Quantized chiral edge conduction on domain walls of a magnetic topological insulator"
Science 358, 1311 (2017).

[4] Y. Okamura, Y. Yamasaki, D. Morikawa, T. Honda, V. Ukleev, H. Nakano, Y. Murakami, K. Shibata, F. Kagawa, S. Seki, T. Arima, and Y. Tokura
"Emergence and magnetic-field variation of chiral-soliton lattice and skyrmion lattice in the strained helimagnet Cu2OSeO3"
Phys. Rev. B 96, 174417 (2017).

[5] F. Kagawa, H. Oike, W. Koshibae, A. Kikkawa, Y. Okamura, Y. Taguchi, N. Nagaosa, and Y. Tokura
"Current-induced viscoelastic topological unwinding of metastable skyrmion strings"
Nat. Commun. 8, 1332 (2017)

[6] T. Yokouchi, N. Kanazawa, A. Kikkawa, D. Morikawa, K. Shibata, T. Arima, Y. Taguchi, F. Kagawa, and Y. Tokura
"Electrical magnetochiral effect induced by chiral spin fluctuations"
Nat. Commun. 8, 866 (2017).

[7] M. Nakamura, S. Horiuchi, F. Kagawa, N. Ogawa, T. Kurumaji, Y. Tokura, and M. Kawasaki
"Shift current photovoltaic effect in a ferroelectric charge-transfer complex"
Nat. Commun. 8, 281 (2017).

[8] X. Z. Yu, D. Morikawa, Y. Tokunaga, M. Kubota, T. Kurumaji, H. Oike, M. Nakamura, F. Kagawa, Y. Toaguchi, T. Arima, M. Kawasaki, and Y. Tokura
"Current-Induced Nucleation and Annihilation of Magnetic Skyrmions at Room Temperature in a Chiral Magnet"
Adv. Mat. 29, 1606178 (2017).

[9] T. Nakajima, H. Oike, A. Kikkawa, E. P. Gilbert, N. Booth, K. Kakurai, Y. Taguchi, Y. Tokura, F. Kagawa, and T. Arima
"Skyrmion lattice structural transition in MnSi"
Sci. Adv. 3, e1602562 (2017).

[10] Y. Okamura, Y. Yamasaki, D. Morikawa, T. Honda, V. Ukleev, H. Nakao, Y. Murakami, K. Shibata, F. Kagawa, S. Seki, T. Arima, and Y. Tokura
"Directional electric-field induced transformation from skyrmion lattice to distinct helices in multiferroic Cu2OSeO3"
Phys. Rev. B 95, 184411 (2017).

[11] F. Kagawa, S. Horiuchi, and Y. Tokura
"Quantum Phenomena Emerging Near a Ferroelectric Critical Point in a Donor-Acceptor Organic Charge-Transfer Complex"
Crystals 7, 106 (2017).

[12] F. Kagawa and H. Oike
"Quenching of Charge and Spin Degrees of Freedom in Condensed Matter"
Adv. Mat. 29, 1601979 (2017).

■2016年

[1] K. Karube, J. S. White, N. Reynolds, J. L. Gavilano, H. Oike, A. Kikkawa, F. Kagawa, Y. Tokunaga, H. M. Rønnow, Y. Tokura and Y. Taguchi
"Robust metastable skyrmions and their triangular-square lattice structural transition in a high-temperature chiral magnet"
Nat. Mat. 15, 1237 (2016).
同誌"News and Views"に選出: Nat. Mat. 15, 1231 (2016).

[2] N. Kanazawa, J. S. White, H. M. Rønnow, C. D. Dewhurst, Y. Fujishiro, A. Tsukazaki, Y. Kozuka, M. Kawasaki, M. Ichikawa, F. Kagawa, and Y. Tokura
"Direct observation of anisotropic magnetic field response of the spin helix in FeGe thin films"
Phys. Rev. B 94, 184432 (2016).  同誌"Editors' Suggestion"に選出.

[3] Y. Okamura, F. Kagawa, S. Seki and Y. Tokura
"Transition to and from the skyrmion lattice phase by electric fields in a magnetoelectric compound"
Nat. Commmun. 7, 12669 (2016).

[4] J. Matsuno, N. Ogawa, K. Yasuda, F. Kagawa, W. Koshibae, N. Nagaosa, Y. Tokura, and M. Kawasaki
"Interface-driven topological Hall effect in SrRuO3-SrIrO3 bilayer"
Sci. Adv. 2, e1600304 (2016).

[5] S. Seki, Y. Okamura, K. Kondou, K. Shibata, M. Kubota, R. Takagi, F. Kagawa, M. Kawasaki, G. Tatara, Y. Otani, and Y. Tokura
"Magnetochiral nonreciprocity of volume spin wave propagation in chiral-lattice ferromagnets"
Phys. Rev. B 93, 235131 (2016).

[6] N. Kanazawa, Y. Nii, X.-X. Zhang, A.S. Mishchenko, G. De Filippis, F. Kagawa, Y. Iwasa, N. Nagaosa, and Y. Tokura
"Critical phenomena of emergent magnetic monopoles in a chiral magnet"
Nat. Commmun. 7, 11622 (2016).

[7] M. Nakamura, F. Kagawa, T. Tanigaki, H. S. Park, T. Matsuda, D. Shindo, Y. Tokura, and M. Kawasaki
"Spontaneous Polarization and Bulk Photovoltaic Effect Driven by Polar Discontinuity in LaFeO3/SrTiO3 Heterojunctions"
Phys. Rev. Lett. 116, 156801 (2016).   同誌"Editors' Suggestion"に選出.

[8] F. Kagawa, N. Minami, S. Horiuchi, and Y. Tokura
"Athermal domain-wall creep near a ferroelectric quantum critical point"
Nat. Commun. 7, 10675 (2016).

[9] H. Oike, A. Kikkawa, N. Kanazawa, Y. Taguchi, M. Kawasaki, Y. Tokura, and F. Kagawa
"Interplay between topological and thermodynamic stability in a metastable magnetic skyrmion lattice"
Nat. Phys. 12, 62 (2016).
同誌"News and Views"に選出: Nat. Phys. 12, 25 (2016).

■2015年

[1] Y. Noda, T. Yamada, K. Kobayashi, R. Kumai, S. Horiuchi, F. Kagawa, and T. Hasegawa
"Few-Volt Operation of Printed Organic Ferroelectric Capacitor"
Adv. Mat. 27, 6475 (2015).

[2] T. Yokouchi, N. Kanazawa, A. Tsukazaki, Y. Kozuka, A. Kikkawa, Y. Taguchi, M. Kawasaki, M. Ichikawa, F. Kagawa and Y. Tokura
"Formation of In-plane Skyrmions in Epitaxial MnSi Thin Films as Revealed by Planar Hall Effect"
J. Phys. Soc. Jpn. 84, 104708 (2015).   同誌の"Editors' Choice"に選出.

[3] S. Horiuchi, Y. Noda, T. Hasegawa, F. Kagawa, and S. Ishibashi
"Correlated Proton Transfer and Ferroelectricity along Alternating Zwitterionic and Nonzwitterionic Anthranilic Acid Molecules"
Chem. Mater. 27, 6193 (2015).

[4] S. Horiuchi, K. Kobayashi, R. Kumai, N. Minami, F. Kagawa, and Y. Tokura
"Quantum ferroelectricity in charge-transfer complex crystals"
Nat. Commun. 6, 7469 (2015).

[5] L. Ye, J. G. Checkelsky, F. Kagawa, and Y. Tokura
"Transport signatures of Fermi surface topology change in BiTeI"
Phys. Rev. B 91, 201104(R) (2015).

[6] Y. Okamura, F. Kagawa, S. Seki, M. Kubota, M. Kawasaki, and Y. Tokura
"Microwave Magnetochiral Dichroism in the Chiral-Lattice Magnet Cu2OSeO3"
Phys. Rev. Lett. 114, 197202 (2015).

[7] N. Kanazawa, M. Kubota, A. Tsukazaki, Y. Kozuka, K. S. Takahashi, M. Kawasaki, M. Ichikawa, F. Kagawa, and Y. Tokura
"Discretized topological Hall effect emerging from skyrmions in constricted geometry"
Phys. Rev. B 91, 041122 (2015).

[8] H. Oike, F. Kagawa, N. Ogawa, A. Ueda, H. Mori, M. Kawasaki, and Y. Tokura
"Phase-change memory function of correlated electrons in organic conductors"
Phys. Rev. B 91, 041101(R) (2015).   同誌"Editors' Suggestion"に選出.

[9] 賀川史敬, 大池広志, 佐藤拓郎
“幾何学的フラストレーション下における電荷の結晶化と急冷によるガラス化”
固体物理 50, 807 (2015).

■2014年

[1] K. Kobayashi, S. Horiuchi, S. Ishibashi, F. Kagawa, Y. Murakami, and R. Kumai
"Structure-Property Relationship of Supramolecular Ferroelectric [H-66dmbp][Hca] Accompanied by High Polarization, Competing Structural Phases, and Polymorphs"
Chem. Eur. J. 20, 17515 (2014).

[2] T. Sato, F. Kagawa, K. Kobayashi, A. Ueda, H. Mori, K. Miyagawa, K. Kanoda, R. Kumai, Y. Murakami, and Y. Tokura
"Systematic Variations in the Charge-Glass-Forming Ability of Geometrically Frustrated θ-(BEDT-TTF)2X organic conductors"
J. Phys. Sco. Jpn. 83, 083602 (2014).   同誌"Editors' Choice"に選出.

[3] M. Ito, Y. Matsubara, Y. Kozuka, K.S. Takahashi, F. Kagawa, J.T. Ye, Y. Iwasa, K. Ueno, Y. Tokura, and M. Kawasaki
"Electric double layer transistors with ferroelectric BaTiO3 channels"
Appl. Phys. Lett. 104, 222101 (2014).

[4] T. Sato, F. Kagawa, K. Kobayashi, K. Miyagawa, K. Kanoda, R. Kumai, Y. Murakami, and Y. Tokura
"Emergence of nonequilibrium charge dynamics in a charge-cluster glass"
Phys. Rev. B 89, 121102(R) (2014).

[5] T. Yokouchi, N. Kanazawa, A. Tsukazaki, Y. Kozuka, M. Kawasaki, M. Ichikawa, F. Kagawa, and Y. Tokura
"Stability of two-dimensional skyrmions in thin films of Mn1-xFexSi investigated by the topological Hall effect"
Phys. Rev. B 89, 064416 (2014).

[6] F. Kagawa, S. Horiuchi, N. Minami, S. Ishibashi, K. Kobayashi, R. Kumai, Y. Murakami, and Y. Tokura
"Polarization Switching Ability Dependent on Multidomain Topology in a Uniaxial Organic Ferroelectric"
Nano Lett. 14, 239 (2014).

[7] 賀川史敬, 堀内佐智雄
“ピエゾ応答力顕微鏡を用いた有機強誘電体ドメイン構造と分極反転過程の可視化”
日本物理学会誌 69, 634 (2014).