Publication List
1. 原著論文
2. プロシーディングス
3. 教科書・解説記事
 |
1. Original Papers
[54] Emergence and magnetic-field variation of chiral-soliton lattice and skyrmion lattice in the strained helimagnet Cu2OSeO3
Y. Okamura, Y. Yamasaki, D. Morikawa, T. Honda, V. Ukleev, H. Nakao, Y. Murakami, K. Shibata, F. Kagawa, S. Seki, T. Arima, Y. Tokura,
Physical Review B. 96 [17], 174417 (2017) 10.1103/physrevb.96.174417
[53] Spin State of Co3+ in LaCo1−xRhxO3 Studied Using X-ray Absorption Spectroscopy, Takaaki Sudayama, Hironori Nakao, Yuichi Yamasaki, Youichi Murakami, Shinichiro Asai, Ryuji Okazaki, Yukio Yasui, Ichiro Terasaki, Journal of the Physical Society of Japan. 86 [9] (2017) 094701 10.7566/jpsj.86.094701
山崎 裕一, 中尾裕則. 共鳴軟X線回折法の新展開. 放射光. 30 [1] (2017) 1-10
[52] Role of commensurability of spin order for optical magnetoelectric effect with electromagnons in multiferroic YMn2O5
R. Masuda, Y. Kaneko, Y. Yamasaki, Y. Tokura, and Y. Takahashi
Phys. Rev. B 96, 041117(R) (2017) 10.1103/PhysRevB.96.041117
[51] High-pressure synthesis of an unusual antiferromagnetic metal CaCoO3 with GdFeO3-type perovskite structure
T. Osaka, H. Takahashi, H. Sagayama, Y. Yamasaki, and S. Ishiwata
Phys. Rev. B 95, 224440 (2017) 10.1103/PhysRevB.95.224440
[50] Directional electric-field induced transformation from skyrmion lattice to distinct helices in multiferroic Cu2OSeO3
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,
Phys. Rev. B 95, 184411 (2017) 10.1103/PhysRevB.95.184411
[49] Microscopic Examinations of Co Valences and Spin States in Electron-Doped LaCoO3
Keisuke Tomiyasu, Syun-Ichi Koyama, Masanori Watahiki, Mika Sato, Kazuki Nishihara, Yuki Takahashi, Mitsugi Onodera, Kazuaki Iwasa, Tsutomu Nojima, Hiroyuki Nojiri, Jun Okamoto, Di-Jing Huang, Yuichi Yamasaki, Hironori Nakao, and Youichi Murakami,
J. Phys. Soc. Jpn. 85, 094702 (2016) 10.7566/JPSJ.85.094702
[48] Uniaxial pressure effects on spin-lattice coupled phase transitions in a geometrical frustrated magnet CuFeO2
H. Tamatsukuri, S. Aoki, S. Mitsuda, T. Nakajima, T. Nakamura, T. Itabashi, S. Hosaka, S. Ito, Y. Yamasaki, H. Nakao, K. Prokes, and K. Kiefer,
Phys. Rev. B 94, 174402 (2016)
[47] Quantum Hall effect in a bulk antiferromagnet EuMnBi2 with magnetically confined two-dimensional Dirac fermions
H. Masuda, H. Sakai, M. Tokunaga, Y. Yamasaki, A. Miyake, J. Shiogai, S. Nakamura, S. Awaji, A. Tsukazaki, H. Nakao, Y. Murakami, T. Arima, Y. Tokura, and S. Ishiwata,
Science Advances 2, e1501117 (2016) 10.1126/sciadv.1501117
[46] Surface Ordering of Orbitals at a Higher Temperature in LaCoO3 Thin Film
Y. Yamasaki, J. Fujioka, H. Nakao, J. Okamoto, T. Sudayama, Y. Murakami, M. Nakamura, M. Kawasaki, T. Arima, and Y. Tokura
J. Phys. Soc. Jpn. 85, 023704 (2016) 10.7566/JPSJ.85.023704
[45] Dynamical Process of Skyrmion-Helical Magnetic Transformation in Chiral-Lattice Magnet FeGe as Probed by Small-Angle Resonant Soft X-ray Scattering
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) 10.1103/PhysRevB.92.220421
[44] Magnetic and electronic states in (LaMnO3)2(SrMnO3)2 superlattice exhibiting a large negative magnetoresistance
H. Nakao, T. Sudayama, M. Kubota, J. Okamoto, Y. Yamasaki, Y. Murakami, H. Yamada, A. Sawa, and K. Iwasa
Phys. Rev. B 92, 245104 (2015) 10.1103/PhysRevB.92.245104
[43] Strain-tunable spin-state ordering in thin film 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) 10.1103/PhysRevB.92.195115
[42] 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 Communications 6, 8539 (2015) 10.1038/ncomms9539
[41] Two kinds of in-plane resistivity anisotropy in Fe1+δTe (δ = 0.09) as seen via synchrotron radiation x-ray diffraction and in-situ resistivity measurements
Taro Nakajima, Tadashi Machida, Hironori Kariya, Daiki Morohoshi, Yuichi Yamasaki, Hironori Nakao, Kazuto Hirata, Takashi Mochiku, Hiroyuki Takeya, Setsuo Mitsuda, and Hideaki Sakata
Phys. Rev. B 91, 205125 (2015) 10.1103/PhysRevB.91.205125
[40] X-ray induced lock-in transition of cycloidal magnetic order in a multiferroic perovskite manganite
Y. Yamasaki, H. Nakao, Y. Murakami, T. Nakajima, A. L. Sampietro, H. Ohsumi, M. Takata, T. Arima, and Y. Tokura
Phys. Rev. B 91, 100403(R) (2015) Editor's Suggestion 10.1103/PhysRevB.91.100403
[39] 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, Y. Taguchi, Y. Tokura and T. Arima
Phys. Rev. B 91, 064101 (2015) 10.1103/PhysRevB.91.064101
[38] Magnetic and electronic properties of (LaMnO3)5(SrMnO3)5 superlattice revealed by resonant soft X-ray scattering
M. Kubota, H. Yamada, H. Nakao, J. Okamoto, Y. Yamasaki, A. Sawa and Y. Murakami
Jpn. J. Appl. Phys. 53 05FH07 (2014) doi:10.7567/JJAP.53.05FH07
[37] Antiferromagnetic Order of the Co2+ High-Spin State with a Large Orbital Angular Momentum in La1.5Ca0.5CoO4
Jun Okamoto, Hironori Nakao, Yuichi Yamasaki, Hiroki Wadati, Youichi Murakami, Masato Kubota, Kazumasa Horigane, Arata Tanaka and Kazuyoshi Yamada
J. Phys. Soc. Jpn. 83, 044705 (2014)
[36] Neutron magnetic scattering study in manganite thin film system,
H. Nakao, H. Yamada, A. Sawa, K. Iwasa, J. Okamoto, T. Sudayama, Y. Yamasaki, and Y. Murakami
Solid State Communications 185, 18–20 (2014)
[35] Multiple helimagneti phases and topological Hall effect in epitaxial thin films of pristine and Co-doped SrFeO3
S. Chakraverty, T. Matsuda, H. Wadati, J. Okamoto, Y. Yamasaki, H. Nakao, Y. Murakami, S. Ishiwata, M. Kawasaki, Y. Taguchi, Y. Tokura, and H. Y. Hwang
Phys. Rev. B 88, 220405(R) (2013)
[34] Uniaxial-Pressure Effects on Spin-Driven Lattice Distortions in Geometrically Frustrated Magnets CuFe1-xGaxO2 (x = 0, 0.035)
Taro Nakajima, Yusuke Iguchi, Hiromu Tamatsukuri, Setsuo Mitsuda, Yuichi Yamasaki, Hironori Nakao, Noriki Terada
J. Phys. Soc. Jpn., Vol.82, No.11, p.114711 (2013)
[33] Extraordinarilyl arge perpendicular magnetic anisotropy in epitaxially strained cobalt-ferrite CoxFe3-xO4 (001) (x=0.75,1.0) thin films
Tomohiko Niizeki, Yuji Utsumi, Ryohei Aoyama, Hideto Yanagihara, Jun-ichiro Inoue, Yuichi Yamasaki, Hironori Nakao, Kazuyuki Koike, and Eiji Kita
Appl. Phys. Lett. 103, 162407 (2013)
[32] Terahertz magnetoelectric resonance enhanced by mutual coupling of electromagnons
Y. Takahashi, Y. Yamasaki, and Y. Tokura,
Phys. Rev. Lett. 111, 037204 (2013)
[31] Spin-orbital superstructure in strained ferrimagnetic per ovskite cobalt oxide
J. Fujioka, Y. Yamasaki, H. Nakao, R. Kumai, Y. Murakami, M. Nakamura, M. Kawasaki, and Y. Tokura,
Phys. Rev. Lett. 111, 027206 (2013)
[30] X-ray photoinduced persistent and bidirectional phase transition enabled by impurity doping in layered manganite,
Y. Yamaki, Y. Yamasaki, H. Nakao, Y. Murakami, Y. Kaneko and Y. Tokura,
Phys. Rev. B 87, 081107:1-5 (2013).
[29] Structure of Electrical Double Layer at Mica/KI Solution Interface.
H. Sakuma, H. Nakao, Y. Yamasaki, and K. Kawamura,
Journal of Applied Solution Chemistry and Modeling, 1, 1-5 (2012)
[28] Pseudogap-related charge dynamics in the layered nickelate R2−xSrxNiO4 (x∼1),
M. Uchida, Y. Yamasaki, Y. Kaneko, K. Ishizaka, J. Okamoto, H.Nakao Y. Murakami, and Y. Tokura,
Phys. Rev. B 86, 165126:1-6 (2012).
[27] High-temperature thermoelectric properties of the double-perovskite ruthenium oxide (Sr1-xLax)2ErRuO6″,
R. Takahashi, R. Okazaki, Y. Yasui, I. Terasaki, T. Sudayama, H.Nakao, Y. Yamasaki, J. Okamoto, Y. Murakami, and Y. Kitajima,
J. Appl. Phys. 112 073714:1-5 (2012).
[26] Orbital states of V trimers in BaV10O15 detected by resonant x-ray scattering,
K. Takubo, T. Kanzaki, Y. Yamasaki, H. Nakao, Y. Murakami, T. Oguchi, and T. Katsufuji,
Phys. Rev. B 86 085141:1-8 (2012).
[25] Origin of the Large Polarization in Multiferroic YMnO3 Thin Films Revealed by Soft- and Hard-X-Ray Diffraction,
H. Wadati, J. Okamoto, M. Garganourakis, V. Scagnoli, U. Staub, Y. Yamasaki, H. Nakao, Y. Murakami, M. Mochizuki, M. Nakamura, M. Kawasaki, and Y. Tokura,
Phys. Rev. Lett. 108, 047203:1-5 (2012).
[24] The randomness effect of spin-orbital order in Eu1−x (La0.2542Y0.7458)xVO3
R. Fukuta, K. Henmi, S. Miyasaka, S. Tajima, D. Kawana, K. Ikeuchi, Y. Yamasaki, A. Nakao, H. Nakao, Y. Murakami, and K. Iwasa
Phys. Rev. B 84, 140409 (2011)
[23] An x-ray induced insulator-metal transition in an oxide thin film
K. Shibuya, D. Okuyama, R. Kumai, Y. Yamasaki, H. Nakao, Y. Murakami, Y. Taguchi, T. Arima, M. Kawasaki, and Y. Tokura
Phys. Rev. B 84, 165108 (2011)
[22] Critical competition between two distinct orbital-spin ordered states in perovskite vanadates
J. Fujioka, T. Yasue, S. Miyasaka, Y. Yamasaki, T. Arima, H. Sagayama, T. Inami, K. Ishii, and Y. Tokura
Phys. Rev. B 82, 144425 (2010)
[21] Excess-electron induced polarization and magnetoelectric effect in yttrium iron garnet
Y. Kohara, Y. Yamasaki, Y. Onose, and Y. Tokura,
Phys. Rev. B 82, 104419 (2010)
[20] Observation of Spin Helicity Using Non-resonant Circularly Polarized X-ray Diffraction
H. Sagayama, N. Abe, K. Taniguchi, T. Arima, Y. Yamasaki, D. Okuyama, Y. Tokura, S. Sakai, T. Morita, T. Komesu, H. Ohsumi, M. Takata,
Journal of the Physical Society of Japan 79, 043711 (2010).
[19] Quantum Magnetoelectric effect in Iron Garnet
Y. Yamasaki, Y. Kohara, and Y. Tokura
Physical Review B 80, 140412 (R) (2009)
[18] Novel Multiferroic State of Eu1-xYxMnO3 in High Magnetic Fields
M. Tokuanaga, Y. Yamasaki, Y. Onose, and Y. Tokura
Physical Review Letters 103, 187202 (2009)
[17] Lattice dynamics in the ab- and bc-spiral spin-ordered states of perovskite manganites
J.S. Lee, N. Kida, Y. Yamasaki, R. Shimano, Y. Tokura
Physical Review B 80, 134409 (2009)
[16] Unconventional Ferroelectric Transition in the Multiferroic Compound TbMnO3 Revealed by the Absence of an Anomaly in c-Polarized Phonon Dispersion
R. Kajimoto, H. Sagayama, K. Sasai, T. Fukuda, S. Tsutsui, T. Arima, K. Hirota, Y. Mitsui, H. Yoshizawa, A. Q. R. Baron, Y. Yamasaki, and Y. Tokura
Physical Review Letters 102, 247602 (2009)
[15] Far-infrared optical study of electromagnons and their coupling to optical phonons in Eu1-xYxMnO3 (x=0.1, 0.2, 0.3, 0.4, and 0.45)
Y. Takahashi, Y. Yamasaki, N. Kida, Y. Kaneko, T. Arima, R. Shimano, and Y. Tokura
Physical Review B 79, 214431 (2009)
[14] Systematics of electromagnons in the spiral spin-ordered states of RMnO3
J. S. Lee, N. Kida, S. Miyahara, Y. Takahashi, Y. Yamasaki, R. Shimano, N. Furukawa, and Y. Tokura
Physical Review B 79, 180403(R) (2009)
[13] Electric-dipole active two-magnon excitation in ab spiral spin phase of a ferroelectric magnet Gd0.7Tb0.3MnO3
N. Kida, Y. Yamasaki, R. Shimano, T. Arima, and Y. Tokura
Journal of Physical Society of Japan 77, 123704 (2008)
[12] An infrared-active continuum band of spin excitations in multiferroic TbMnO3
Y. Takahashi, N. Kida, Y. Yamasaki, J. Fujioka, T. Arima, R. Shimano, and Y. Tokura
Physical Review Letters 101, 187201 (2008)
[11] Electrically driven spin excitation in a ferroelectric magnet DyMnO3
N. Kida, Y. Ikebe, Y. Takahashi, J. P. He, Y. Kaneko, Y. Yamasaki, R. Shimano, T. Arima, and Y. Tokura
Physical Review B 78, 104414 (2008)
[10] Cycloidal Spin Order in the a-axis Polarized Ferroelectric Phase of Orthorhombic Perovskite Manganite
Y. Yamasaki, H. Sagayama, N. Abe, T. Arima, K. Sasai, M. Matsuura, K. Hirota, D. Okuyama, Y. Noda, Y. Tokura
Physical Review Letters 101, 097204 (2008)
[9] Correlation between spin helicity and electric polarization vector in quantum-spin chain magnet LiCu2O2
S. Seki, Y. Yamasaki, M. Soda, M. Matsuura, K. Hirota, and Y. Tokura
Physical Review Letters 100, 127201 (2008)
[8] Magnetic field switching between the two orbital-ordered states in DyVO3
S. Miyasaka, T. Yasue, J. Fujioka, Y. Yamasaki, Y. Okimoto, R. Kumai, T. Arima, and Y. Tokura
Physical Review Letter 99, 217201 (2007)
[7] Ferroelectric phase transitions of 3d-spin origin in Eu1-xYxMnO3
Y. Yamasaki, S. Miyasaka, T. Goto, H. Sagayama, T. Arima, and Y. Tokura
Physical Review B 76, 184418 (2007)
[6] Electric Control of Spin Helicity in a Magnetic Ferroelectric
Y. Yamasaki, H. Sagayama, T. Goto, M. Matsuura, K. Hirota, T. Arima, and Y. Tokura
Physical Review Letters 98, 147204 (2007)
[5] Impurity-doping induced ferroelectricity in frustrated antiferromagnet CuFeO2
S. Seki, Y. Yamasaki, Y. Shiomi, S. Iguchi, Y. Onose, and Y. Tokura
Physical Review B 75, 100403(R) (2007)
[4] Spin-Lattice Coupling in Ferroelectric Spiral Magnets: Comparison between the Cases of (Tb,Dy)MnO3 and CoCr2O4
T. Arima, Y. Yamasaki, T. Goto, S. Iguchi, K. Ohgushi, S. Miyasaka, and Y. Tokura
Journal Physical Society of Japan 76 (2), 023602 (2007)
[3] Magnetic Reversal of the Ferroelectric Polarization in a Multiferroic Spinel Oxide
Y. Yamasaki, S. Miyasaka, Y. Kaneko, J.-P. He, T. Arima, and Y. Tokura
Physical Review Letters 96, 207204 (2006)
[2] Anti-correlation between ferromagnetism and ferroelectricity in perovskite manganites
T. Goto, Y. Yamasaki, H. Watanabe, S. Miyasaka, T. Kimura, and Y. Tokura
Physical Review B 72, 220403(R) (2005)
[1] Magnetic-field-induced transition in the lattice modulation of colossal magnetoelectric GdMnO3 and TbMnO3 compounds
T. Arima, T. Goto, Y. Yamasaki, S. Miyasaka, K. Ishii, M. Tsubota, T. Inami, Y. Murakami, and Y. Tokura
Physical Review B 72, 100102 (R) (2005)
Magnetic reversal of the ferroelectric polarization in a spinel-type CoCr2O4
Yuichi Yamasaki, Takahisa Arima, Yoshinori Tokura
Kotai Butsuri 42(1), 29-36 (2007) (in Japanese)
[9] Development of an in-vacuum diffractometer for resonant soft X-ray scattering
H Nakao, Y. Yamasaki, J Okamoto, T Sudayama, Y Takahashi, K Kobayashi, R Kumai and Y Murakami
Journal of Physics: Conference Series 502, 012015 (2014)
[8] Construction of a soft X-ray diffractometer with a 7.5-T superconducting magnet
J Okamoto, H Nakao, Y. Yamasaki, T Sudayama, K Kobayashi, Y Takahashi, H Yamada, A Sawa, M Kubota, R Kumai and Y Murakami
Journal of Physics: Conference Series 502, 012016 (2014)
[7] Molecular electronic states in charge transfer complex studied by x-ray absorption spectroscopy
Y Takahashi, H Nakao, R Kumai, S Ishibashi, S Horiuchi, M Kohyama, K Kobayashi, Y. Yamasaki, J Okamoto, T Sudayama, Y Murakami and Y Tokura
Journal of Physics: Conference Series 502, 012036 (2014)
[6] “Dopant-dependence on charge-orbital order in impurity doped layered manganites”
Y. Yamaki, Y. Yamasaki, H. Nakao, Y. Murakami, Y. Kaneko, Y. Tokura
J. Korean Phys. Soc., 63, 729-732 (2013) .
[5] Diffractometer for small angle resonant soft x-ray scattering under magnetic field
Yuichi Yamasaki, Takaaki Sudayama, Jun Okamoto, Hironori Nakao, Masato Kubota and Youichi Murakami,
J. Phys.: Conf. Ser. 425 132012:1-4 (2013). doi:10.1088/1742-6596/425/13/132012
[4] REXS contribution to electronic ordering investigation in solids,
T.A.W. Beale, G. Beutier, S.R. Bland, A. Bombardi, L. Bouchenoire, O. Bunău, S. Di Matteo, J. Fernandez-Rodriguez, J.E. Hamann-Borrero, J. Herrero-Martin, V.L.R. Jacques, R.D. Johnson, A. Juhin, T. Matsumura, C. Mazzoli, A.M. Mulders, H. Nakao, J. Okamoto, S. Partzsch, A.J. Princep, V. Scagnoli, J. Strempfer, C. Vecchini, Y. Wakabayashi, H.C. Walker, D. Wermeille and Y. Yamasaki,
Eur. Phys. J. Special Topics 208, 89-98 (2012).
[3] High-Field Study of Multiferroic Properties in Orthorhombic Eu1-xYxMnO3
M. Tokunaga, I. Katakura, Y. Yamasaki, Y. Onose, and Y. Tokura
Journal of Physics: Conference Series 150, 042212 (2009)
[2] Terahertz time-domain spectroscopy of electromagnons in multiferroic perovskite manganites [Invited]
N. Kida, Y. Takahashi, J. S. Lee, R. Shimano, Y. Yamasaki, Y. Kaneko, S. Miyahara, N. Furukawa, T. Arima, and Y. Tokura
Journal Optical Society of America B 26, A35-A51 (2009)
[1] Electrically driven spin excitation at THz frequencies in ab and bc spiral spin phases of perovskite manganites
N. Kida, Y. Yamasaki, J.P. He, Y. Kaneko, Y. Ikebe, Y. Takahashi, R. Shimano, T. Arima, N. Nagaosa, and Y Tokura
Journal of Physics: Conference Series 148, 012038 (2009)