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"High-Harmonic Generation in a Correlated Electron System"
Shohei Imai, Atsushi Ono, Sumio Ishihara
Phys. Rev. Lett. 124, 157404 (2020).
Editors' Suggestions
"Optical Response in Excitonic Insulating State: Variational Cluster Approach"
Hengyue Li, Junya Otsuki, Makoto Naka, Sumio Ishihara
Phys. Rev. B 101, 125117 (2020).
"Nonequilibrium susceptibility in photoinduced Floquet states"
Atsushi Ono and Sumio Ishihara
Phys. Rev. B 100, 075127 (2019).
"Photoinduced Ultrafast Phenomena in Correlated Electron Magnets" (invited review papers)
Sumio Ishihara
J. Phys. Soc. Jpn. 88, 023703-1-28 (2019).
"Photoinduced topological spin texture in a metallic ferromagnet"
Atsushi Ono, and Sumio Ishihara
J. Phys. Soc. Jpn. 88, 023703-1-4 (2019).
"Orbital-selective confinement effect of Ru 4d orbitals in SrRuO3 ultrathin film"
Soonmin Kang, Yi Tseng, Beom Hyun Kim, Seokhwan Yun, Byungmin Sohn, Bongju Kim, Daniel McNally, Eugenio Paris, Choong H. Kim, Changyoung Kim, Tae Won Noh, Sumio Ishihara, Thorsten Schmitt, and Je-Geun Park
Phys. Rev. B 99, 045113 (2019).
"Charge disproportionation of Mn 3d and O 2p electronic states depending on strength of p-d hybridization in (LaMnO3)2(SrMnO3)2 superlattices"
Hironori Nakao, Chihiro Tabata, Youichi Murakami, Yuichi Yamasaki, Hiroyuki Yamada, Sumio Ishihara, and Masashi Kawasaki
Phys. Rev. B 98, 245146 (2018).
"Photocontrol of magnetic structure in an itinerant magnet"
Atsushi Ono and Sumio Ishihara
Phys. Rev. B 98, 214408 (2018).
"Photoinduced collective mode, inhomogeneity, and melting in a charge-order system"
Hitoshi Seo, Yasuhiro Tanaka, and Sumio Ishihara
Phys. Rev. B 98, 235150 (2018).
" Probing ultrafast spin-relaxation and precession dynamics in a cuprate Mott insulator with seven-femtosecond optical pulses"
T. Miyamoto, Y. Matsui, T. Terashige, T. Morimoto, N. Sono, H. Yada, S. Ishihara, Y. Watanabe, S. Adachi, T. Ito, K. Oka, A. Sawa & H. Okamoto
Nature Communications 9, 3948 (2018).
"Quantum Paramagnet Near Spin]State Transition"
K. Tomiyasu, N. Ito, R. Okazaki, Y. Takahashi, M. Onodera, K. Iwasa, T. Nojima, T. Aoyama, K. Ohgushi, Y. Ishikawa, T. Kamiyama, S. Ohira]Kawamura, M. Kofu, S. Ishihara
Advanced Quantum Technologies, 1800057 (2018)
"Nonlinear charge oscillation driven by a single-cycle light field in an organic superconductorr"
Y. Kawakami, T. Amano, Y. Yoneyama, Y. Akamine, H. Itoh, G. Kawaguchi, H. M. Yamamoto, H. Kishida, K. Itoh, T. Sasaki, S. Ishihara, Y. Tanaka, K. Yonemitsu and S. Iwai
Nature Photonics 12, 474-478 (2018)
"Electronic state and optical response in a hydrogen-bonded molecular conductor"
Makoto Naka and Sumio Ishihara
Phys. Rev. B 97, 245110 (2018).
"Magnetoelectric Effect in a Spin-State Transition System"
M. Naka, E. Mizoguchi, J. Nasu, and S. Ishihara
J. Phys. Soc. Jpn. 87, 063709 (2018).
"Quantum-disordered state of magnetic and electric dipoles in an organic Mott system"
M. Shimozawa, K. Hashimoto, A. Ueda, Y. Suzuki, K. Sugii, S. Yamada, Y. Imai, R. Kobayashi, K. Itoh, S. Iguchi, M. Naka, S. Ishihara, H. Mori, T. Sasaki and M. Yamashita
Nature Communications 8, 1821 (2017).
"Double-Exchange Interaction in Optically Induced Nonequilibrium State: A Conversion from Ferromagnetic to Antiferromagnetic Structure"
Atsushi Ono and Sumio Ishihara
Physicsl Review Letters 119,207202 (2017).
Editors' Suggestions
"Coulomb Correlations Intertwined with Spin and Orbital Excitations in LaCoO3"
K. Tomiyasu, J. Okamoto, H. Y. Huang, Z. Y. Chen, E.?P. Sinaga, W. B. Wu, Y. Y. Chu, A. Singh, R.-P. Wang, F. M. F. de Groot, A. Chainani, S. Ishihara, C. T. Chen, and D. J. Huang
Physicsl Review Letters 119, 196402 (2017).
"Spin and charge fluctuations near metal-insulator transition in dimer-type molecular solid"
N. Sato, T. Watanabe, M. Naka, S. Ishihara
J. Phys. Soc. Jpn. 86, 053701-1-5 (2017).
"Optical suppression of electron motion in low-dimensional correlated electron system"
Atsushi Ono, Hiroshi Hashimoto, and Sumio Ishihara
Phys. Rev. B 95, 085123 (2017).
"Photoinduced charge-order melting dynamics in a one-dimensional interacting Holstein model"
Hiroshi Hashimoto and Sumio Ishihara
Phys. Rev. B 96, 035154 (2017).
"Polarization selectivity of charge localization induced by 7-fs nearly single-cycle light-field in an organic metal"
Y. Kawakami, Y. Yoneyama, T. Amano, H. Itoh, K. Yamamoto, Y. Nakamura, H. Kishida, T. Sasaki, S. Ishihara, Y. Tanaka, K. Yonemitsu, and S. Iwai
Phys. Rev. B 95, 201105(R)-1-5(2017).
"Magnetic field effects in a correlated electron system with spin-state degree of freedom - Implication of an excitonic insulator -"
T. Tatsuno, E. Mizoguchi, J. Nasu, M. Nasu, and S. Ishihara
J. Phys. Soc. Jpn. 85, 083706-1-5 (2016).
"Pulse excitation to continuous-wave excitation in a low-dimensional interacting quantum system"
A. Ono, H. Hashimoto and S. Ishihara
Phys. Rev. B 94, 115152-1-8 (2016).
KALEIDOSCOPE
"Quantum Melting of Magnetic Order in an Organic Dimer-Mott Insulating System"
M. Naka and S. Ishihara
Phys. Rev. B 93,195114-1-5 (2016)
"Ultrafast response of plasma-like reflectivity edge in (TMTTF)2AsF6 driven by 7-fs, 1.5-cycle strong-light field"
Y. Naitoh, Y. Kawakami, T. Ishikawa, Y. Sagae, H. Itoh, K. Yamamoto, T. Sasaki, M. Dressel, S. Ishihara, Y. Tanaka, K. Yonemitsu, and S. Iwai
Phys. Rev. B 93, 165126-1-5 (2016)
"Phase diagram and collective excitation in excitonic insulator: from the orbital physics viewpoint"
Joji Nasu, Tsutomu Watanabe, Makoto Naka, Sumio Ishihara
Phys. Rev. B 93,205136-1-15 (2016)
"Observation of momentum-resolved charge fluctuations proximate to the charge-order phase using resonant inelastic x-ray scattering"
M. Yoshida, K. Ishii, M. Naka, S. Ishihara, I. Jarrige, K. Ikeuchi, Y. Murakami, K. Kudo, Y. Koike, T. Nagata, Y. Fukada, N. Ikeda and J. Mizuki
Scientific Report 6, 23611-1-8 (2015)
"Photoinduced correlated electron dynamics in a two-leg ladder Hubbard system"
H. Hashimoto, and S. Ishihara
Phys. Rev. B 93, 165133-1-10 (2016)
"Ultrafast electronic state conversion at room temperature utilizing hidden state in cuprate ladder system"
R. Fukaya, Y. Okimoto, M. Kunitomo, K. Onda, T. Ishikawa, S. Koshihara, H. Hashimoto, S. Ishihara, A. Isayama, H. Yui and T. Sasagawa
Nat. Comm. 6, 8519-1-7 (2015)
"Magnetoelectric effect in organic molecular solids"
M. Naka and S. Ishihara
Scientific Report 6, 20781-1-7 (2015)
"Photo-Induced Phase Transition in Charge Order Systems --Charge Frustration and Interplay with Lattice--"
H. Hashimoto, H. Matsueda, H. Seo, and S. Ishihara
J. Phys. Soc. Jpn. 84, 113702-1-5 (2015)
"Absence of Jahn-Teller transition in the hexagonal Ba3CuSb2O9 single crystal"
N. Katayama, K. Kimura, Y. Hanc, J. Nasue, N. Drichko, Y. Nakanishi, M. Halim, Y. Ishiguro, R. Satake, E. Nishibori, M. Yoshizawa, T. Nakano, Y. Nozue, Y. Wakabayashi, S. Ishihara, M. Hagiwara, H. Sawa, and S. Nakatsuji
Proc. Natl. Acad. Sci. (USAj 112, 9305-9309 (2015)
"Emergence of charge degrees of freedom under high pressure in the organic dimer-Mott insulator ƒÀ'-(BEDT-TTF)2ICl2"
K. Hashimoto, R. Kobayashi, H. Okamura, H. Taniguchi, Y. Ikemoto, T. Moriwaki, S. Iguchi, M. Naka, S. Ishihara, and T. Sasaki
Phys. Rev. B 92, 085149-1-7 (2015)
"Charge Dynamics in a Correlated Fermion System on a Geometrically Frustrated Lattice"
M. Naka and S. Ishihara
J. Phys. Soc. Jpn. 84, 023703-1-4 (2015)
"Resonating Valence-Bond State in an Orbitally Degenerate Quantum Magnet with Dynamical Jahn-Teller Effect "
J. Nasu and S. Ishihara
Phys. Rev. B 91, 045117-1-8 (2015)
"Optical freezing of charge motion in an organic conductor "
T. Ishikawa, Y. Sagae, Y. Naitoh, Y. Kawakami, H. Itoh, K. Yamamoto, K. Yakushi, H. Kishida, T. Sasaki, S. Ishihara, Y. Tanaka, K. Yonemitsu and S. Iwai
Nat. Comm. 5, 5528-1-6 (2014)
"Photo-Induced Dynamics in Charge-Frustrated Systems "
H. Hashimoto, H. Matsueda, H. Seo and S. Ishihara
J. Phys. Soc. Jpn. 83, 123703-1-4 (2014)
"Electronic Ferroelectricity in Molecular Organic Crystals "
S. Ishihara
J. Phys.: Cond. Matt. 26, 493201-1-12 (2014)
"Erratum: Dynamical Jahn-Teller effect in a spin-orbital coupled system [Phys. Rev. B 88, 094408 (2013)]"
J. Nasu and S. Ishihara
Phys. Rev. B 90, 179903 (2014).
"Transient Carrier Dynamics in a Mott Insulator with Antiferromagnetic Order "
E. Iyoda, and S. Ishihara
Phys. Rev. B 89, 125126-1-13 (2014)
KALEIDOSCOPE
"Vibronic excitation dynamics in orbitally degenerate correlated electron system "
J. Nasu and S. Ishihara
Phys. Rev. B 88, 205110 (2013)
Editors' Suggestion
"Narrowing of phonon spectrum induced by ultrafast charge fluctuations in an organic dimer Mott insulator "
K. Itoh, H. Itoh, S. Saito, I. Hosako, Y. Nakamura, H. Kishida, N. Yoneyama, T. Sasaki, S. Ishihara, and S. Iwai
Phys. Rev. B 88, 125101-1-6 (2013)
"Spin-state responses to light impurity substitution in low-spin perovskite LaCoO3 "
K. Tomiyasu, Y. Kubota, S. Shimomura, M. Onodera, S. Koyama, T. Nojima, S. Ishihara, H. Nakao, and Y. Murakami
Phys. Rev. B 87, 224409-1-8 (2013)
"Polar Charge Fluctuation and Superconductivity in Organic Conductor "
A. Sekine, J. Nasu, and S. Ishihara
Phys. Rev. B 87, 085133-1-6 (2013)
"Band and Mott Insulators and Superconductivity in Honeycomb-Lattice Ionic-Hubbard Model "
T. Watanabe, and S. Ishihara
J. Phys. Soc. Jpn. 82, 034704-1-7 (2013)
"Dynamical Jahn-Teller Effect in Spin-Orbital Coupled System "
J. Nasu, and S. Ishihara
Phys. Rev. B 88, 094408-1-6 (2013)
"Collective Charge Excitation in a Dimer Mott Insulating System "
M. Naka, and S. Ishihara
J. Phys. Soc. Jpn. 82, 023701-1-5 (2013)
"Collective excitation of electric dimer dipole in organic dimer Mott insulator"
K. Itoh, H. Itoh, M. Naka, S. Saito, I. Hosako, N. Yoneyama, S. Ishihara, T. Sasaki, S. Iwai
Phys. Rev. Lett. 110, 106401-1-4 (2013)
"Photoinduced magnetic bound state in itinerant correlated electron system with spin-state degree of freedom"
Yu Kanamori, Jun Ohara and Sumio Ishihara
Phys. Rev. B 86, 045137-1-14 (2012)
"Optical manipulation of magnetism in spin-charge coupled correlated electron system"
Jun Ohara, Yu Kanamori, and Sumio Ishihara
Phys. Rev. B 88, 085107-1-7 (2013)
"Ordering and excitation in orbital compass model on a checkerboard lattice"
Joji Nasu, Synge Todo, and Sumio Ishihara
Phys. Rev. B 85, 205141-1-12 (2012)
"Orbital Compass Model as an Itinerant Electron System"
J. Nasu and S. Ishihara
Europhys. Lett. 97, 27002-1-6 (2012)
"Photoinduced Change in the Spin State of Itinerant Correlated Electron Systems"
Y. Kanamori, H. Matsueda and S. Ishihara
Phys. Rev. Lett. 107, 167403-1-5 (2011)
"Polarization-analyzed resonant inelastic x-ray scattering of the orbital excitations in KCuF3"
K. Ishii, S. Ishihara, Y. Murakami, K. Ikeuchi, K. Kuzushita, T. Inami, K. Ohwada, M. Yoshida, I. Jarrige, N. Tatami, S. Niioka, D. Bizen, Y. Ando, J. Mizuki, S. Maekawa and Y. Endoh
Phys. Rev. B 83, 241101-1-4 (2011)
Editors' Suggestion
"Ring-Exchange Interaction in Doubly Degenerate Orbital System"
J. Nasu and S. Ishihara
J. Phys. Soc. Jpn. 80, 033704-1-4 (2011)
"Quantum Dielectric Fluctuation in an Electronic Ferroelectricity studied by Variational Monte-Carlo Method"
T. Watanabe and S. Ishihara
J. Phys. Soc. Jpn. 79, 114714-1-10 (2010)
"Numerical Study of Photo-Induced Dynamics in Double-Exchange Model"
Y. Kanamori, H. Matsueda and S. Ishihara
Phys. Rev. B 82, 115101-1-14 (2010)
"Electronic Ferroelectricity in a Dimer Mott Insulator"
M. Naka and S. Ishihara
J. Phys. Soc. Jpn. 79, 063707-1-4 (2010)
Editors' Choice
"Electronic ferroelectricity and frustration"
S. Ishihara
J. Phys. Soc. Jpn. 79, 011010-1-11 (2010)
Special Topics "Novel States of Matter Induced by Frustration"
"Dynamical Coupling and Separation of Multiple Degrees of Freedom in a Photoexcited Double-Exchange Systeml"
Y. Kanamori, H. Matsueda and S. Ishihara
Phys. Rev. Lett. 103, 267401-1-4 (2009)
"Quantum fluctuation and geometrical frustration effects on electric polarization"
T. Watanabe and S. Ishihara
J. Phys. Soc. Jpn. 78, 113702-1-4 (2009)
"Spin state transition and phase separation in a multiorbital Hubbard model"
R. Suzuki, T. Watanabe and S. Ishihara
Phys. Rev. B 80, 054410-1-5 (2009)
"Dilution effect in correlated electron system with orbital degeneracy"
T. Tanaka and S. Ishihara
Phys. Rev. B 79, 035109-1-11 (2009)
"Numerical study of t2g orbital system with ferromagnetic polarization"
T. Tanaka and S. Ishihara
Phys. Rev. B 78, 153106-1-4 (2008)
"Doubly degenerate orbital system in honeycomb lattice: implication of orbital state in layered iron oxide"
J. Nasu, A. Nagano, M. Naka and S. Ishihara
Phys. Rev. B 78, 024416-1-12 (2008)
"Magneto-dielectric phenomana in charge and spin frustrated system of layered iron oxide"
M. Naka, A. Nagano and S. Ishihara
Phys. Rev. B 77, 224441-1-15 (2008)
Editors' Suggestion
"Electric Polarization, Magnetoelectric Effect and Orbital State of Layered Iron Oxide with Frustrated Geometry"
A. Nagano, M. Naka, J. Nasu and S. Ishihara
Phys. Rev. Lett. 99, 217202-1-4 (2007)
"Photoinduced charge and spin dynamics in strongly correlated electron system"
H. Matsueda and S. Ishihara
J. Phys. Soc. Jpn. 76, 083703-1-4 (2007)
"Dilution Effects in Two-dimensional Quantum Orbital System"
T. Tanaka and S. Ishihara
Phys. Rev. Lett. 98, 256402-1-4 (2007)
"Randomly Diluted eg Orbital-Ordered Systems"
T. Tanaka, M. Matsumoto and S. Ishihara
Phys. Rev. Lett. 95, 267204-1-4 (2005)
"Charge transfer excitation at the interface of manganite hetero-structure"
T. Satoh, K. Miyano, Y. Ogimoto, H. Tamaru, and S. Ishihara @@
Phys. Rev. B. 72, 224403-1-4 (2005)
"Theory and experiment of orbital excitations in correlated oxides"
S. Ishihara, Y. Murakami, T. Inami, K. Ishii, J. Mizuki, K. Hirota, S. Maekawa and Y. Endoh
New J. Phys. 7, 119-1-24 (2005)
"Hole dynamics in spin and orbital ordered vanadium perovskites"
S. Ishihara
Phys. Rev. Lett. 94, 156408-1-4 (2005)
"Resonant inelastic x-ray scattering study of hole-doped manganites La1-xSrxMnO3 (x=0.2 and 0.4)"
K. Ishii, T. Inami, K. Ohwada, K. Kuzushita, J. Mizuki, Y. Murakami, S. Ishihara, Y. Endoh, S. Maekawa, K. Hirota and Y. Moritomo
Phys. Rev. B 70, 224437-1-6 (2004)
"Interplay of Electron-Phonon Interaction and Electron Correlation in High Temperature Superconductivity"
S. Ishihara and N. Nagaosa
Phys. Rev. B 69, 144520-1-13 (2004)
"Obital Wave and its Observation in Orbital Ordered Titanates and Vanadates"
S. Ishihara
Phys. Rev. B 69, 075118-1-9 (2004)
"Ferromagnetic Insulating Phase in Pr1-xCaxMnO3"
R. Kajimoto, H. Mochizuki, H. Yoshizawa, S. Okamoto and S. Ishihara
Phys. Rev. B 69, 054433-1-10 (2004)
"Distorted Perovskite with eg1 Configuration as a Frustrated Spin System"
T. Kimura, S. Ishihara, K. T. Takahashi, H. Shintani and Y. Tokura
Phys. Rev. B 68, 060403-1-4 (2003)
"Orbital Excitations in CMR Progenitor of LaMnO3 studied by Resonant Inelastic X-ray Scattering"
T. Inami,T. Fukuda, J. Mizuki, S. Ishihara, H. Kondo, H. Nakao, T. Matsumura, K. Hirota, Y. Murakami, S. Maekawa and Y. Endoh
Phys. Rev. B 67, 045108-1-6 (2003)
"Quantitative Determination of the Orbital Ordering in YTiO3 by using Resonant X-ray Scattering Technique"
H. Nakao, Y. Wakabayashi, T. Kiyama, Y. Murakami, M. v. Zimmermann, J. P. Hill, D. Gibbs, S. Ishihara, Y. Taguchi and Y. Tokura
Phys. Rev. B 66, 184419-1-7 (2002)
"Theory of Raman Scattering from Orbital Excitations in Manganese Oxides"
S. Okamoto, S. Ishihara and S. Maekawa
Phys. Rev. B 66, 014435-1-9 (2002)
"Role of electron-phonon interaction in the strongly correlated cuprates superconductors"
Z. -X. Shen, A. Lanzara, S. Ishihara and N. Nagaosa
Phil. Mag. B 82, 1349-1368 (2002)
"Orbital Ordering in LaMnO3: Electron-electron and electron-lattice interactions"
S. Okamoto, S. Ishihara and S. Maekawa
Phys. Rev. B 65, 144403-1-8 (2002)
"Observation of the Antiferroquadrupolar Ordering in DyB2C2 by Resonant X-Ray Scattering"
T. Matsumura, N. Oumi, K. Hirota, Y. Wakabayashi, H. Nakano, Y. Murakami, T. Arima, S. Ishihara and Y. Endoh
Phys. Rev. B 65, 094420-1-11 (2002)
"Magnetic Ordering, Orbital Ordering and Resonant X-ray Scattering in Perovskite Titanates"
S. Ishihara, T. Hatakeyama and S. Maekawa
Phys. Rev. B 65, 064442-1-9 (2002)
"Spin Dynamical Properties and Orbital States of the Layered Perovskite La2-2xSr1+2xMn2O7 (0.3< x < 0.5)"
K. Hirota, S. Ishihara, H. Fujioka, M. Kubota, H. Yoshizawa, Y. Moritomo, Y. Endoh and S. Maekawa
Phys. Rev. B 65, 064414-1-10 (2002)
"Field Induced Orbital Order-Disorder Transition in an A-type Antiferromagnetic Manganite: High Field Study of Nd0.45Sr0.55MnO3"
T. Hayashi, N. Miura, K. Noda, H. Kuwahara, S. Okamoto, S. Ishihara and S. Maekawa
Phys. Rev. B 65, 024408-1-5 (2002)
"Resonant X-ray Scattering in Manganites - Study of Orbital Degree of Freedom -"
S. Ishihara and S. Maekawa
Rep. Prog. Phys. 65, 561-598 (2002)
"Resonant Inelastic X-ray Scattering from Charge and Orbital Excitations in Manganites"
H. Kondo, S. Ishihara and S. Maekawa
Phys. Rev. B 64, 014414-1-8 (2001)
"Observation of orbital waves as elementary excitations in a solid"
E. Saitoh, S. Okamoto, K. T. Takahashi, K. Tobe, K. Yamamoto, T. Kimura, S. Ishihara, S. Maekawa, and Y. Tokura
Nature 410, 180-183 (2001)
"Orbital Structure and Magnetic Ordering in Layered Manganites: Universal Correlation and Its Mechanism"
S. Okamoto, S. Ishihara and S. Maekawa
Phys. Rev. B 63, 104401-1-6 (2001)