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Resent Papers

2009

  • Inverse Iron Isotope Effect on the Transition Temperature of the (Ba,K)Fe2As2 Superconductor
    P.M. Shirage, K. Kihou, K. Miyazawa, C.-H. Lee, H. Kito, H. Eisaki, T. Yanagisawa, Y. Tanaka, A. Iyo, Physical Review Letters 103, 257003 (2009).
  • Isotope Effect in Multi-Band and Multi-Channel Attractive Systems and Inverse Isotope Effect in Iron-Based Superconductors
    T. Yanagisawa, K. Odagiri, I. Hase, K. Yamaji, P. Shirage, Y. Tanaka, A. Iyo, H. Eisaki, J. Physical Society of Japan 78 (2009) 094718.
  • Thermal Variations of Magnetic Excitation Spectrum in Slightly Overdoped Bi2.1 Sr1.9CaCu2O8+d
    M. Matsuura, Y. Yoshida, H. Eisaki, N. Kaneko, C.-H. Lee and K. Hirota, J. Physical Society of Japan 78 (2009) 074703.
  • Electronic Structure of LaNiC2 and YNiC2
    I. Hase and T. Yanagisawa, J. Physical Society of Japan 78 (2009) 084724.
  • Strong-Coupling Superconductivity in Noncentrosymmetric Superconductor Li2Pd3B by Sub-meV Photoemission Spectroscopy
    S. Tsuda et al., J. Physical Society of Japan 78 (2009) 034711.
  • The synthesis under controlled oxygen partial pressure and the characterization of a layered perovskite system Sr2V1-xMoxO4
    S. Kouno, N. Shirakawa, Y. Yoshida, N. Umeyama, K. Tokiwa, T. Watanabe, J. Physical C21 (2009) 285601.
  • Incommensurate Antiferromagnetism Coexisting with Superconductivity in Two-Dimensional d-p Model
    T. Yanagisawa, M. Miyazaki, K. Yamaji, J. Physical Society of Japan 78 (2009) 013706.
  • Checkerboard States in the Two-Dimensional Hubbard Model with the Bi2212-Type Band
    Mitake Miyazaki, Kunihiko Yamaji, Takashi Yanagisawa, Ryosuke Kadono, J. Physical Society of Japan 78 (2009) 043706.
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2008

  • Crystal-field level inversion in lightly Mn-doped Sr3Ru2O7:Valence, spin, and orbital control via localized impurities M.A. Hossain、 Z. Hu、 M.W. Haverkort、 T. Burnus、C.F. Chang、S. Klein、J.D. Denlinger、H.-J. Lin、C.T. Chen, R. Mathieu,Y. Kaneko, Y. Tokura, S. Sato, Y. Yoshida, H. Takagi, A. Tanaka, I.S. Elfimov, G.A. Sawatzky, L.H. Tjeng, A. Damascelli, PHYSICAL REVIEW LETTERS，101，016404 (2008).
  • An Isotopic Fingerprint of Electron-Phonon Coupling in High-Tc Cuprates H. Iwasawa, J. F. Douglas, K. Sato, Masui, Y. Yoshida, Zhe Sun, H. Eisaki, H. Bando, Dan Dessau, Y. Aiura et al., PHYSICAL REVIEW LETTERS 101, 157005 (2008).
  • Jahn-Teller Inactivity and Magnetic Frustration in GeCo2O4 Probed by Ultrasound Velocity Measurements T. Watanabe, S. Hara, S. Ikeda、PHYSICAL REVIEW B，78，094420 (2008).
  • Evolution of the spectral weight in the Mott-Hubbard series SrVO3-CaVO3-LaVO3-YVO3 R. J. O. Mossanek, M. Abbate, T. Yoshida, A. Fujimiri, Y. Yoshida, N. Shirakawa, H. Eisaki, S. Kouno, F. C. Vicentin, Physical Review B78, 075103 (2008).
  • Phase diagram of the t-U2 Hamiltonian of weak coupling Hubbard Model T. Yanagisawa, New Journal of Physics 10, 023014 (2008).
  • Sheet Dependence on Superconducting Gap in Oxygen-Deficient Iron-based Oxypnictide Superconductors NdFeAsO0.85, Y. Aiura、S. Sato, H. Iwasawa, I. Hase et al.，JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 77，103712 (2008).
  • Magnetic properties of Ca3Ru2O7 under uniaxial pressures Y. Yoshida、S. I. Ikeda、N. Shirakawa、 et al.，JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 77, 093702 (2008).
  • The synthesis of a quasi-2D metal oxide Sr3Mo2O7, S. Kouno、 N. Shirakawa、K. Tokiwa、 T. Watanabe et al., Physica B，403, 1029 (2008).
  • t' and t''-dependence of the bulk-limit superconducting condensation energy of the 2D Hubbard model K. Yamaji, T. Yanagisawa, M. Miyazaki, R. Kadono, Physica C468, 1125 (2008).
  • Valence Skip Behavior in BaBiO3 and TlS I. Hase, T. Yanagisawa, Physica C468, 1129 (2008).
  • Physics of the Huubard Model and High Temperature Superconductivity T. Yanagisawa, Journal of Physics: Conference Series 108, 012010 (2008).
  • Electronic States of Valence Skipping Compounds I. Hase, T. Yanagisawa, Journal of Physics: Conference Series 108, 012011 (2008).
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2007

  • Pseudogap Dependence of the Optical Conductivity Spectra of Ca3Ru2O7: A Possible Contribution of the Orbital Flip Excitation， J. S. Lee、S. J. Moon、B. J. Yang、Jaejun Yu、U. Schade、 Y. Yoshida、S. I. Ikeda、T. W. Noh，PHYSICAL REVIEW LETTERS，98，097403 (2007).
  • Spin-charge-lattice coupling near the metal-insulator transition in Ca3Ru2O7， C. S. Nelson、H. Mo、B. Bohnenbuck、B. Keimer、J. Strempfer、N. KIkukawa、S. I. Ikeda、Y. Yoshida, PHYSICAL REVIEW B，75，212403 (2007).
  • Local Tunneling Spectroscopy across a Metamagnetic Critical Point in the Bilayer Ruthenate Sr3Ru2O7， K. Iwatani、S. Sato、T. Hanaguri、N. Shannon、Y. Yoshida、S. I. Ikeda、J. P. He et al., PHYSICAL REVIEW LETTERS 99，057208、(2007).
  • Quantum Monte Carlo Diagonalization for Many-Fermion Systems T. Yanagisawa, Physical Review B75, 224503 (2007).
  • Madelung Energy of the Valence Skipping Compound BaBiO3 I. Hase、T. Yanagisawa, Physical Review B76, 174103 (2007).
  • The Synthesis and Characterization of Double-Layered Perovskite Sr3Mo2O7 S. Kouno、N. SHirakawa、K. TOkiwa、T. Watanabe、I. Nagai、N. Umeyama Journal of the Physical Society of Japan 76, 094706 (2007).
  • Hall effect in Ca3Ru2O7 Y. Yoshida、S.I. Ikeda、N. Shirakawa，JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 76-8，085002 (2007).
  • Supersymmetry and Superconductor-Insulator Transition T. Yanagisawa, Progress of Theoretical Physics 118, 229 (2007).
  • Low-lying optical phonon modes in the filled skutterudite CeRu4Sb12 C. H. Lee、I. Hase、H. Sugawara、H. Yoshizawa、H. Sato， JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 75-12，123602 (2006).
  • Heavy-fermion behavior in CeRh2Si Muro、N. SHirakawa、S. Takahashi、K. Sunahara、S. Motoya、M. Akatsu Journal of Magnetism and Magnetic Materials，310, 40 (2007).
  • Single-molecule magnet behavior in heterometallic M-II-Mn-2(III)-M-II tetramers (M-II = Cu, Ni) containing Mn-III salen-type dinuclear core C. Kachi-Terajima、N. Shirakawa、H. MIyasaka、A. Saitoh、M. Yamashita、R. Clerac Inorganic Chemistry 46 (2007) 5861?5872.
  • Thermopower of double-layered ruthenate Ca3Ru2O7 K. Iwata、M. Kosaka、S. Katano、N. Mori、Y. Yoshida、N. Shirakawa，JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 319-2，1125 (2007).
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2006

  • Missing xy-Band Fermi Surface in Sr2RhO4”、B.J. Kim, Y. Yu, I. Nagai, S. Ikeda, S.-J. Oh, C. Kim, Physical Revview Letters 97 (2006) 106401.
  • Electronic Structure of Ni3AlXy (X=B, C, H; 0<y<1) I. Hase，MATERIALS TRANSACTIONS，47 (2006) 475.
  • Metallic States of the Three-Band Hubbard Model with Superlattice Structure S. Koikegami and T. Yanagisawa, Journal of the Physical Society of Japan 75 (2006) 044712.
  • Superconductivity in Multilayer Perovskite: Weak Coupling Analysis S. Koikegami and T. Yanagisawa, Journal of the Physical Society of Japan 75 (2006) 034715.
  • Electronic structures of layered perovskite Sr2MO4 (M=Ru, Rh, and Ir) S. J. Moon（ReCOE & FPRD）、M. W. Kim、K. W. Kim、Y. S. Lee、J.-Y. Kim、J.-H. Park、B. J. Kim、S. -J. Oh、S. Nakatusji、Y. Maeno、I. Nagai、S. I. Ikeda、G. Cao、T. W. Noh，PHYSICAL REVIEW B，74 (2006) 113104.
  • Low-lying optical phonon modes in the filled skutterudite CeRu4Sb12 C. H. Lee、I. Hase、H. Sugawara、H. Yoshizawa、H. Sato， JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 75-12，123602 (2006).
  • Two-Domains of the Parameter Space of the 2D Hubbard Model for High-Tc Superconductors K. Yamaji, M. Miyazaki, T. Yanagisawa, Journal of Superconductivity 18 (2006) 803
  • Deoxidization of Cu oxide under extremely low oxygen pressure ambient K. Endo, N. Shirakawa, Y. Yoshida. S. Ikeda, T. Mino, E. Gofuku, E. Suzuki, Japanese Journal of Applied Physics Part 2 45 (2006) 393.
  • Capacitance thermometer made of oxygen isotope-exchanged strontium titanate perovskite H. Takashima, R.P. Wang, N. Shirakawa, B. Prijamboedi, M. Okana, A. Shoji, M. Itoh, Applied Physics Letters 88 (2006) 082906.
  • Effects of Higher Hopping Terms on the Stripe States in the Two-Dimensional Hubbard Model M. Miyazaki, K. Yamaji, T. Yanagisawa, Journal of Superconductivity 18 (2006) 727.
  • Optical Properties in Unconventional Supercondutors T. Yanagisawa and H. Shibata, Topics in Superconductivity Research (Nova Science Publishers, New York, 2006).
  • Electronic Structure of (Tl0.125 Pb0.875)Te I. Hase、T. Yanagisawa、PHYSICA C445 (2006).
  • Capacitance thermometer made of oxygen isotope-exchanged strontium titanate perovskite H. Takashima, R.P. Wang, N. Shirakawa, B. Prijamboedi, M. Okana, A. Shoji, M. Itoh, Applied Physics Letters 88, 082906 (2006).
  • Missing xy-Band Fermi Surface in Sr2RhO4 B.J. Kim, Y. Yu, I. Nagai, S. Ikeda, S.-J. Oh, C. Kim, Physical Revview Letters 97, 106401 (2006).
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2005

  • Highest conductivity oxide SrMoO3 grown by a floating-zone method under ultralow oxygen partial pressure, I. Nagai, N. Shirakawa, S.-I. Ikeda, R. Iwasaki, H. Nishimura, and M. Kosaka, Applied Physics Letters 87 (2005) 024105.
  • Crystal and magnetic structure of Ca3Ru2O7 Y. Yoshida, S. I. Ikeda, H. Matsuhata, N. Shirakawa, C. H. Lee, S. Katano, Physical Review B 72 (2005) 054412-1-54412-7.
  • Quasi-two-dimensional metallic ground state of Ca3Ru2O7 Y. Yoshida, I. Nagai, S. I. Ikeda, N. Shirakawa, M. Kosaka and N. Mori, Physical Review B 69 (2004) 220411-1-220411-4.
  • Colossal magnetoresistance accompanying a structural transition in a highly two-dimensional metallic state of Ca3Ru2O7 E. Ohmichi, Y. Yoshida, S. I. Ikeda, N. Shirakawa and T. Osada, Physical Review B 70 (2004) 104414.
  • Bond length dependence of charge transfer excitation and stretch phonon mode in perovskite ruthenates: evidence of strong p- d hybridization effects J. S. Lee, Y. S. Lee, T. W. Noh, S. Nakatsuji, H. Fukazawa, R. S. Perry, Y. Maeno, Y. Yoshida, S. I. Ikeda, J. Yu and C. B. Eom, Physical Review B 70 (2004) 085103-1-085103-6.
  • Orbital selectivity of the kink in the dispersion of Sr2RuO4 H. Iwasawa, Y. Aiura, T. Saito、I. Hase、S. I. Ikeda、Y. Yoshida et al., PHYSICAL REVIEW B，72 (2005) 104514.
  • Development of the Uniaxial Pressure Cell for Neutron Diffraction and its Study on Pressure Induced Ferromagnet Sr3Ru2O7 N. Aso, Y. Uwatoko, H. Kimura, Y. Noda, Y. Yoshida, S. I. Ikeda, S. Katano, Journal of Physics: Condensed Matter 17 (2005) S3025-S3028.
  • Fermi arc in doped high-Tc cuprates T. Yanagisawa, M. Miyazaki, K. Yamaji, Journal of the Physical Society of Japan 74 (2005) 835.
  • A Heterometal Single-Molecule Magnet of [MnIII2NiII2Cl2 (salpa)2] H. Oshio, M. Nihei, S. Koizumi, T. Shiga, H. Nojiri, M. Nakano, N. Shirakawa, and M. Akatsu, Journal of American Chemical Society 127 (2005) 4568-4569.
  • Crystal growth of germanium-based oxide spinels by the Float Zone Method S. Hara, Y. Yoshida, S. Ikeda, N. Shirakawa, M.K. Crawford, K. Takase, Y. Takano, K. Sekigawa, Journal of Crystal Growth 283 (2005) 185.
  • Low Temperature Static Magnetization of an Organic Ferromagnet, b-p-NPNN N. Shirakawa and M. Tamura, Polyhedron 24 (2005) 2405-2408.
  • Field-Induced Magnetic Anisotropy of Single-Crystal GeNi2O4 S. Hara、Y. YOshida、S. I. Ikeda、N. Shirakawa, M. Craford et al.，JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 73 (2004) 2959.
  • Crystal and magnetic structure of Ca3Ru2O7 Y. Yoshida, S. I. Ikeda, H. Matsuhata, N. Shirakawa, C. H. Lee, S. Katano, Physical Review B 72, 054412 (2005).
  • Orbital selectivity of the kink in the dispersion of Sr2RuO4 H. Iwasawa, Y. Aiura, T. Saitoh, I. Hase et al., Physical Review B72,104514 (2005).
  • Highest conductivity oxide SrMoO3 grown by a floating-zone method under ultralow oxygen partial pressure I. Nagai, N. Shirakawa, S.-I. Ikeda, R. Iwasaki, H. Nishimura, and M. Kosaka, Applied Physics Letters 87 (2005) 024105.
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2004

  • Colossal magnetoresistance accompanying a structural transition in a highly two-dimensional metallic state of Ca3Ru2O7 E. Ohmichi, Y. Yoshida, S. I. Ikeda, N. Shirakawa and T. Osada, Physical Review B 70, 104414 (2004).
  • Quasi-two-dimensional metallic ground state of Ca3Ru2O7 Y. Yoshida, I. Nagai, S. I. Ikeda, N. Shirakawa, M. Kosaka and N. Mori, Physical Review B 69: 220411, (2004).
  • A kink in the Dispersion of Layered Strontium Ruthenate Y. Aiura, Y. Yoshida, I. Hase, S. I. Ikeda, M. Higashiguchi,　X. Y. Cui, K. Shimada,H. Namatame, M. Taniguchi and H. Bando, Physical Review Letters 93, 117005 (2004).
  • Uniaxial-Pressure induced Ferromagnetism of Enhanced Paramagnetic Sr3Ru2O7 S. I. Ikeda, N. Shirakawa,T. Yanagisawa, Y. Yoshida, S. Koikegami, S. Koike, M. Kosaka and Y. Uwatoko, Journal of the Physical Society of Japan 73, 1322 (2004).
  • Bond length dependence of charge transfer excitation and stretch phonon mode in perovskite ruthenates: evidence of strong p- d hybridization effects J. S. Lee, Y. S. Lee, T. W. Noh, S. Nakatsuji, H. Fukazawa, R. S. Perry, Y. Maeno, Y. Yoshida, S. I. Ikeda, J. Yu and C. B. Eom, Physical Review B70, 085103, (2004).
  • Ni3AlB: a bridge between superconductivity and ferromagnetism I. Hase, Physical Review B70, 033105, (2004).
  • Diagonal Stripe States on the Lightly-doping Region in the Two-dimensional Hubbard Model M. Miyazaki, T. Yanagisawa and K. Yamaji, Journal of the Physical Society of Japan 73, 1643 (2004).
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