Refereed papers in 2015

[1010] "Interplay between topological and thermodynamic stability in a metastable magnetic skyrmion lattice" H. Oike, A. Kikkawa, N. Kanazawa, Y. Taguchi, M. Kawasaki, Y. Tokura, and F. Kagawa
Nat. Phys., 12, 62 (2015) .
[1009] "High pressure effects revisited for the cuprate superconductor family with highest critical temperature" A. Yamamoto, N. Takeshita, C. Terakura and Y. Tokura
Nat. Commun., 6, 8990 (2015) .
[1008] "Unidirectional terahertz light absorption in the pyroelectric ferrimagnet CaBaCo4O7" S. Bordács, V. Kocsis, Y. Tokunaga, U. Nagel, T. Rõõm, Y. Takahashi, Y. Taguchi and Y. Tokura
Phys. Rev. B, 92, 214441 (2015) .
[1007] "Thermal Generation of Spin Current in an Antiferromagnet" S. Seki, T. Ideue, M. Kubota, Y. Kozuka, R. Takagi, M. Nakamura, Y. Kaneko, M. Kawasaki and Y. Tokura
Phys. Rev. Lett., 115, 266601 (2015) .
[1006] "Large anisotropic deformation of skyrmions in strained crystal" Y. Yamasaki, D. Morikawa, T. Honda, H. Nakao, Y. Murakami, N. Kanazawa, M. Kawasaki, T. Arima, and Y. Tokura
Phys. Rev. B, 92, 220421(R) (2015) .
[1005] "Magnetization states of canted antiferromagnetic YFeO3 investigated by terahertz time-domain spectroscopy" T. H. Kim, C. Kang, C.-S. Kee, J.-H. Lee, B. K. Cho, P. Gruenberg, Y. Tokunaga, Y. Tokura, and J. S. Lee
J. Appl. Phys., 118, 233101 (2015) .
[1004] "Direct Imaging of Dynamic Glassy Behavior in a Strained Manganite Film" W. Kundhikanjana, Z. Sheng, Y. Yang, K. Lai, E. Y. Ma, Y.-T. Cui, M. A. Kelly, M. Nakamura, M. Kawasaki, Y. Tokura, Q. Tang, K. Zhang, X. Li, and Z.-X. Shen
Phys. Rev. Lett., 115, 265701 (2015) .
[1003] "Lorentz transmission electron microscopy on nanometric magnetic bubbles and skyrmions in bilayered manganites La1.2Sr1.8(Mn1-yRuy)2O7 with controlled magnetic anisotropy" D. Morikawa, X. Z. Yu, Y. Kaneko, Y. Tokunaga, T. Nagai, K. Kimoto, T. Arima, and Y. Tokura
Appl. Phys. Lett., 107, 212401 (2015) .
[1002] "Pressure-induced spin reorientation and spin state transition in SrCoO3" J.-Y. Yang, C. Terakura, M. Medarde, J. S. White, D. Sheptyakov, X.-Z. Yan, N.-N. Li, W.-G. Yang, H.-L. Xia, J.-H. Dai, Y.-Y. Yin, Y.-Y. Jiao, J.-G. Cheng, Y.-L. Bu, Q.-F. Zhang, X.-D. Li, C.-Q. Jin, Y. Taguchi, Y. Tokura and Y.-W. Long
Phys. Rev. B, 92, 195147 (2015) .
[1001] "Uniaxial stress control of skyrmion phase" Y. Nii, T. Nakajima, A. Kikkawa, Y. Yamasaki, K. Ohishi, J. Suzuki, Y. Taguchi, T. Arima, Y. Tokura and Y. Iwasa
Nature Commun., 6, 8539 (2015) .
[1000] "Quantum Hall states stabilized in semi-magnetic bilayers of topological insulators" R. Yoshimi, K. Yasuda, A. Tsukazaki, K. S. Takahashi, N. Nagaosa, M. Kawasaki and Y. Tokura
Nature Commun., 6, 8530 (2015) .
[999] "Magnetic modulation doping in topological insulators toward higher-temperature quantum anomalous Hall effect" M. Mogi, R. Yoshimi, A. Tsukazaki, K. Yasuda, Y. Kozuka, K. S. Takahashi,M. Kawasaki and Y. Tokura
Appl. Phys. Lett., 107, 182401 (2015) .
[998] "Strain-sensitive spin-state ordering in thin films of perovskite LaCoO3" J. Fujioka, Y. Yamasaki, A. Doi, H. Nakao, R. Kumai, Y. Murakami, M. Nakamura, M. Kawasaki, T. Arima and Y. Tokura
Phys. Rev. B, 92, 195115 (2015) .
[997] "Piezomagnetoelectric Effect of Spin Origin in Dysprosium Orthoferrite" T. Nakajima, Y. Tokunaga, Y. Taguchi, Y. Tokura and T. Arima
Phys. Rev. Lett., 115, 197205 (2015) .
[996] "Ultrafast x-ray and optical signatures of phase competition and separation underlying the photoinduced metallic phase in Pr1-xCaxMnO3" M. C. Langner, S. Zhou, G. Coslovich, Y.-D. Chuang, Y. Zhu, J. S. Robinson, W. F. Schlotter, J. J. Turner, M. P. Minitti, R. G. Moore, W. S. Lee, D. H. Lu, D. Doering, P. Denes, Y. Tomioka, Y. Tokura, R. A. Kaindl, and R. W. Schoenlein,
Phys. Rev. B, 92, 155148 (2015) .
[995] "Mobile metallic domain walls in an all-in-all-out magnetic insulator" E. Y. Ma, Y.-T. Cui, K. Ueda, S. Tang, K. Chen, N. Tamura, P. M. Wu, J. Fujioka, Y. Tokura and Z.-X. Shen
Science, 350, 538 (2015) .
[994] "Current-driven dynamics of skyrmions stabilized in MnSi nanowires revealed by topological Hall effect" D. Liang, J. P. DeGrave, M. J. Stolt, Y. Tokura and S. Jin
Nature Commun., 6, 8217 (2015) .
[993] "Enhanced cryogenic thermopower in SrTiO3 by ionic gating" S. Shimizu, S. Ono, T. Hatano, Y. Iwasa and Y. Tokura
Phys. Rev. B, 92, 165304 (2015) .
[992] "Pressure and magnetic field effects onmetal-insulator transitions of bulk and domain wall states in pyrochlore iridates" K. Shibata, J. Iwasaki, N. Kanazawa, S. Aizawa, T. Tanigaki, M. Shirai, T. Nakajima, M. Kubota, M. Kawasaki, H. S. Park, D. Shindo, N. Nagaosa and Y. Tokura
Phys. Rev. B, 92, 121110(R) (2015) .
[991] "Doping-Tunable Ferrimagnetic Phase with Large Linear Magnetoelectric Effect in a Polar Magnet Fe2Mo3O8" T. Kurumaji, S. Ishiwata and Y. Tokura
Phys. Rev. X, 5, 031034 (2015) .
[990] "Thermoelectric probe for Fermi surface topology in the three-dimensional Rashba semiconductor BiTeI" T. Ideue, L. Ye, J. G. Checkelsky, H. Murakawa, Y. Kaneko and Y. Tokura
Phys. Rev. B, 92, 115144 (2015) .
[989] "Formation of In-plane Skyrmions in Epitaxial MnSi Thin Films as Revealed by Planar Hall Effect" T. Yokouchi, N. Kanazawa, A. Tsukazaki, Y. Kozuka, A. Kikkawa, Y. Taguchi, M. Kawasaki, M. Ichikawa, F. Kagawa and Y. Tokura
J. Phys. Soc. Jpn., 84, 104708 (2015) .
[988] "Nonequilibrium electronic and phonon dynamics of Cu0.17Bi2Se3 investigated by core-level and valence-band time-resolved photoemission spectroscopy" T. Yamamoto, Y. Ishida, R. Yoshida, M. Okawa, K. Okazaki, T. Kanai, A. Kikkawa, Y. Taguchi, T. Kiss, K. Ishizaka, N. Ishii, J. Itatani, S. Watanabe, Y. Tokura, T. Saitoh and S. Shin
Phys. Rev. B, 92, 121106(R) (2015) .
[987] "Real-Space Observation of Short-Period Cubic Lattice of Skyrmions in MnGe" T. Tanigaki, K. Shibata, N. Kanazawa, X.-Z. Yu, Y. Onose, H. S. Park, D. Shindo and Y. Tokura
Nano Lett., 15, 5438 (2015) .
[986] "Ferroelectric-like metallic state in electron doped BaTiO3" J. Fujioka, A. Doi, D. Okuyama, D. Morikawa, T. Arima, K. N. Okada, Y. Kaneko, T. Fukuda, H. Uchiyama, D. Ishikawa, A. Q. R. Baron, K. Kato, M. Takata and Y. Tokura
Sci. Rep.,, 5, 13207 (2015) .
[985] "A new class of chiral materials hosting magnetic skyrmions beyond room temperature" Y. Tokunaga, X. Z. Yu, J. S. White, H. M. Rønnow, D. Morikawa, Y. Taguchi and Y. Tokura,
Nature Commun., 6, 7638 (2015) .
[984] "Magnetic Field-Induced Insulator-Semimetal Transition in a Pyrochlore Nd2Ir2O7" K. Ueda, J. Fujioka, B.-J. Yang, J. Shiogai, A. Tsukazaki, S. Nakamura, S. Awaji, N. Nagaosa and Y. Tokura
Phys. Rev. Lett., 115, 056402 (2015) .
[983] "Charge-order domain walls with enhanced conductivity in a layered manganite" E. Y. Ma, B. Bryant, Y. Tokunaga, G. Aeppli, Y. Tokura and Z.-X. Shen
Nature Commun., 6, 7595 (2015) .
[982] "Photodrive of magnetic bubbles via magnetoelastic waves" N. Ogawa, W. Koshibae, A. J. Beekman, N. Nagaosa, M. Kubota, M. Kawasaki and Y. Tokura
PNAS, 112, 8977 (2015) .
[981] "Two-Dimensional Valley Electrons and Excitons in Noncentrosymmetric 3R-MoS2" R. Akashi, M. Ochi, S. Bordács, R. Suzuki, Y. Tokura, Y. Iwasa and R. Arita
Phys. Rev. Applied, 4, 014002 (2015) .
[980] "Distinct Substrate Effect on the Reversibility of the Metal-Insulator Transitions in Electrolyte-Gated VO2" M. Nakano, D. Okuyama, K. Shibuya,M. Mizumaki, H. Ohsumi, M. Yoshida, M. Takata, M. Kawasaki, Y. Tokura, T. Arima and Y. Iwasa
Adv. Electron. Mater., 1, 1500093 (2015) .
[979] "Large anisotropic deformation of skyrmions in strained crystal" K. Shibata, J. Iwasaki, N. Kanazawa, S. Aizawa, T. Tanigaki, M. Shirai, T. Nakajima, M. Kubota, M. Kawasaki, H. S. Park, D. Shindo, N. Nagaosa and Y. Tokura
Nat. Nanotechnol., 10, 589 (2015) .
[978] "Field-direction control of the type of charge carriers in nonsymmorphic IrO2" M. Uchida, W. Sano, K. S. Takahashi, T. Koretsune, Y. Kozuka, R. Arita, Y. Tokura, and M. Kawasaki
Phys. Rev. B, 91, 241119 (2015) .
[977] "Quantum ferroelectricity in charge-transfer complex crystals" S. Horiuchi, K. Kobayashi, R. Kumai, N. Minami, F. Kagawa, and Y. Tokura
Nat. Commun., 6, 7469 (2015) .
[976] "Neutron Diffraction Study of Parasitic Nd-Moment Order in the Checkerboard-Type Phase Nd1.3Sr0.7NiO4" R. Kobayashi, H. Yoshizawa, M. Matsuda, R. Kajimoto, K. Ishizaka, and Y. Tokura
J. Phys. Soc. Jpn., 84, 064711 (2015) .
[975] "Observation of a Devil’s Staircase in the Novel Spin-Valve System SrCo6O11" T. Matsuda, S. Partzsch, T. Tsuyama, E. Schierle, E. Weschke, J. Geck, T. Saito, S. Ishiwata, Y. Tokura, and H. Wadati
Phys. Rev. Lett., 114, 236403 (2015) .
[974] "Transport signatures of Fermi surface topology change in BiTeI" L. Ye, J. G. Checkelsky, F. Kagawa, and Y. Tokura
Phys. Rev. B, 91, 201104 (2015) .
[973] "Memory functions of magnetic skyrmions" W. Koshibae, Y. Kaneko, J. Iwasaki, M. Kawasaki, Y. Tokura, and N. Nagaosa
Jpn. J. Appl. Phys., 54, 053001 (2015) .
[972] "Coexistence of Monochalocogen and Dichalocogen Ions in BiSe2 and BiS2 Crystals Prepared at High Pressure" A. Yamamoto, D. Hashizume, M. S. Bahramy, and Y. Tokura
Inorg. Chem., 54, 4114 (2015) .
[971] "Quantum Hall effect on top and bottom surface states of topological insulator (Bi1-xSbx)2Te3 films" R. Yoshimi, A. Tsukazaki, Y. Kozuka, J. Falson, K.S. Takahashi, J.G. Checkelsky, N. Nagaosa, M. Kawasaki, and Y. Tokura
Nat. Commun., 6, 6627 (2015) .
[970] "Microwave magnetochiral dichroism in chiral-lattice magnet Cu2OSeO3" Y. Okamura, F. Kagawa, S. Seki, M. Kubota, M. Kawasaki, Y. Tokura
Phys. Rev. Lett., 114, 197202 (2015) .
[969] "Ultrafast optical excitation of magnetic skyrmions" N. Ogawa, S. Seki, and Y. Tokura
Sci. Rep., 5, 9552 (2015) .
[968] "Temperature and field dependence of magnetic domains in La1.2Sr1.8Mn2O7" B. Bryant, Y. Moritomo, Y. Tokura, and G. Aeppli
Phys. Rev. B, 91, 134408 (2015) .
[967] "Control of magnetism by electric fields" F. Matsukura, Y. Tokura, and H. Ohno
Nat. Nanotechnol., 10, 209 (2015) .
[966] "Modification of electronic structure and thermoelectric properties of hole-doped tungsten dichalcogenides" M. Kriener, A. Kikkawa, T. Suzuki, R. Akashi, R. Arita, Y. Tokura, and Y. Taguchi
Phys. Rev. B, 91, 075205 (2015) .
[965] "X-ray induced lock-in transition of cycloidal magnetic order in a multiferroic perovskite manganite" Y. Yamasaki, H. Nakao, Y. Murakami, T. Nakajima, A. Lafuente Sampietro, H. Ohsumi, M.Takata, T. Arima, and Y. Tokura
Phys. Rev. B, 91, 100403 (2015) .
[964] "Uniaxial-Stress Control of Spin-Driven Ferroelectricity in Multiferroic Ba2CoGe2O7" T. Nakajima, Y. Tokunaga, V. Kocsis, Y. Taguchi, Y. Tokura, and T. Arima
Phys. Rev. Lett., 114, 067201 (2015) .
[963] "X-ray spectroscopic study of BaFeO3 thin films: An Fe4+ ferromagnetic insulator" T. Tsuyama, T. Matsuda, S. Chakraverty, J. Okamoto, E. Ikenaga, A. Tanaka, T. Mizokawa, H. Y. Hwang, Y. Tokura, and H. Wadati
Phys. Rev. B, 91, 115101 (2015) .
[962] "Perovskite LaRhO3 as a p-type active layer in oxide photovoltaics" M. Nakamura, Y. Krockenberger, J. Fujioka, M. Kawasaki, Y. Tokura
Appl. Phys. Lett., 106, 072103 (2015) .
[961] "X-ray study of metal-insulator transitions induced by W doping and photoirradiation in VO2 films" D. Okuyama, K. Shibuya, R. Kumai, T. Suzuki, Y. Yamasaki, H. Nakao, Y. Murakami, M. Kawasaki, Y. Taguchi, Y. Tokura, and T. Arima
Phys. Rev. B, 91, 064101 (2015) .
[960] "Discretized topological Hall effect emerging from skyrmions in constricted geometry" N. Kanazawa, M. Kubota, A. Tsukazaki, Y. Kozuka, K. S. Takahashi, M. Kawasaki, M.Ichikawa, F. Kagawa, Y. Tokura
Phys. Rev. B, 91, 041122 (2015) .
[959] "Phase-change memory function of correlated electrons in organic conductors" H. Oike, F. Kagawa, N. Ogawa, A. Ueda, H. Mori, M. Kawasaki, and Y. Tokura
Phys. Rev. B, 91, 041101 (2015) .