Non-equilibrium phase transition in strongly correlated electron systems

• Project/Area Number: 20740188
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: The University of Tokyo
• Principal Investigator: OKA Takashi The University of Tokyo, 大学院・理学系研究科, 助教 (50421847)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 強相関系 / 非平衡現象 / 非平衡・非線形物理学

Research Abstract

I developed new theoretical methods (non-equilibrium dynamical mean field theory) to treat non-equilibrium phenomena in strongly correlated electron systems. (10 original papers, 1 chapter of a book, 2 Japanese articles)

Research Products

• [Journal Article] Dielectric breakdown of Mott insulators in dynamical mean-field theory (2010)
  • Author(s): M.Eckstein, T.Oka, P.Werner
  • Journal Title: Phys.Rev.Lett. 105 Pages: 146404-146404
  • Peer Reviewed
• [Journal Article] Nonequilibrium magnetic and superconducting phases in the two-dimensional Hubbard model coupled to electrodes (2010)
  • Author(s): T.Oka, H.Aoki
  • Journal Title: Phys.Rev.B 82
  • Peer Reviewed
• [Journal Article] Dielectric Breakdown in a Mott Insulator : Many-body Schwinger-Landau-Zener Mechanism studied with a Generalized Bethe Ansatz. (2010)
  • Author(s): T.Oka, H.Aoki
  • Journal Title: Phys.Rev.B 81 Pages: 33103-33103
  • Peer Reviewed
• [Journal Article] Realization of tight-binding photonic bands in metallophotonic waveguide networks with application to a flat band in kagome lattice (2010)
  • Author(s): S.Endo, T.Oka, H.Aoki
  • Journal Title: Phys.Rev.B 81
  • Peer Reviewed
• [Journal Article] Weak-coupling quantum Monte Carlo calculations on the Keldysh contour : theory and application to the current-voltage characteristics of the Anderson model (2010)
  • Author(s): P.Werner, T.Oka, M.Eckstein, A.J.Millis
  • Journal Title: Phys.Rev.B 81 Pages: 35108-35108
  • Peer Reviewed
• [Journal Article] Weak-coupling quantum Monte Carlo calculations on the Keldysh contour : theory and application to the current-voltage characteristics of the Anderson model (2010)
  • Author(s): P.Werner, T.Oka, M.Eckstein, A.J.Millis
  • Journal Title: Phys.Rev.B Volume: 81
  • Peer Reviewed
• [Journal Article] Dielectric breakdown in a Mott insulator : Many-body Schwinger-Landau-Zener mechanism studied with a generalized Bethe ansatz (2010)
  • Author(s): T.Oka, H.Aoki
  • Journal Title: Phys.Rev.B Volume: 81
  • Peer Reviewed
• [Journal Article] Tight-binding photonic bands in metallophotonic waveguide networks and flat bands in kagome lattices (2010)
  • Author(s): Shimpei Endo, Takashi Oka, Hideo Aoki
  • Journal Title: Phys.Rev.B Volume: 81
  • Peer Reviewed
• [Journal Article] Nonequilibrium superconducting and magnetic phases in a correlated electron system coupled to electrodes (2010)
  • Author(s): T.Oka, H.Aoki
  • Journal Title: Phys.Rev.B Volume: 82
  • Peer Reviewed
• [Journal Article] Dielectric Breakdown of Mott Insulators in Dynamical Mean-Field Theory (2010)
  • Author(s): M.Eckstein, T.Oka, P.Werner
  • Journal Title: Phys.Rev.Lett. Volume: 105
  • Peer Reviewed
• [Journal Article] Non-Hermitian generalization of the Bethe-ansatz excited states and dielectric breakdown in the Hubbard model out of equilibrium (2010)
  • Author(s): T.Oka, H.Aoki
  • Journal Title: Phys.Rev.B 81 Pages: 33103-33106
  • Peer Reviewed
• [Journal Article] Nonequilibrium steady state in photoexcited correlated electrons with dissipation. (2009)
  • Author(s): N.Tsuji, T.Oka, H.Aoki
  • Journal Title: Phys.Rev.Lett. 103 Pages: 47403-47403
  • Peer Reviewed
• [Journal Article] Photovoltaic Hall effect in graphene. selected in Virtual Journal of Nanoscale Science & Technology (2009)
  • Author(s): T. Oka, H. Aoki
  • Journal Title: Phys.Rev.B Erratum Phys.Rev.B 79
  • Peer Reviewed
• [Journal Article] Diagrammatic Monte Carlo simulation of non-equilibrium systems. (2009)
  • Author(s): P.Werner, T.Oka, A.J.Millis
  • Journal Title: Phys.Rev.B 79 Pages: 35320-35320
  • Peer Reviewed
• [Journal Article] Photovoltaic Hall effect in graphene (2009)
  • Author(s): T.Oka, H.Aoki
  • Journal Title: Phys.Rev.B(Rapid Communication) 79
  • Peer Reviewed
• [Journal Article] Nonequilibrium steady state in photoexcited correlated electrons with dissipation (2009)
  • Author(s): N.Tsuji, T.Oka, H.Aoki
  • Journal Title: Phys.Rev.Lett. 103 Pages: 47403-47406
  • Peer Reviewed
• [Journal Article] Photovoltaic Hall effect in graphene (2009)
  • Author(s): T. Oka and H. Aoki
  • Journal Title: Phys. Rev. B (Rapid Communication) 79
  • Peer Reviewed
• [Journal Article] Diagrammatic Monte Carlo simulation of non-equilibrium systems (2009)
  • Author(s): P. Werner, T. Oka, A. J. Millis
  • Journal Title: Phys. Rev. B 79
  • Peer Reviewed
• [Journal Article] Photo-induced Hall Effect in Graphene -Effect of Boundary Types (2009)
  • Author(s): T. Oka and H. Aoki
  • Journal Title: Journal of Physics : Conference Series 148 Pages: 12061-12063
  • Peer Reviewed
• [Journal Article] Nonequilibrium Quantum Breakdown in a Strongly Correlated Electron System (2009)
  • Author(s): T. Oka and H. Aoki
  • Journal Title: arXiv : 0803. 0422 ((印刷中)掲載確定)
• [Journal Article] Nonequilibrium steady state in photoexcited correlated electrons with dissipation (2009)
  • Author(s): Naoto Tsuji, T. Oka and H. Aoki
  • Journal Title: arXiv : 0903.2332 ((印刷中)掲載確定)
  • Peer Reviewed
• [Journal Article] Non-Hermitian Generalization of the Bethe-Ansatz Excited States and Dielectric Breakdown in the Hubbard Model out of Equilibrium (2009)
  • Author(s): T. Oka and H. Aoki
  • Journal Title: arXiv : 0903. 2707 ((印刷中)掲載確定)
  • Peer Reviewed
• [Journal Article] Photo-induced Tomonaga-Luttinger-like liquid in a Mott insulator. (2008)
  • Author(s): T.Oka, H.Aoki
  • Journal Title: Phys.Rev.B 78
  • Peer Reviewed
• [Journal Article] Correlated electron systems periodically driven out of equilibrium-Floquet+DMFT formalism. (2008)
  • Author(s): N.Tsuji, T.Oka, H.Aoki
  • Journal Title: Phys.Rev.B 78 Pages: 235124-235124
  • Peer Reviewed
• [Journal Article] Photo-induced Tomonaga-Luttinger-like liquid in a Mott insulator (2008)
  • Author(s): T. Oka and H. Aoki
  • Journal Title: Phys. Rev. B (Rapid Communication) 78
  • Peer Reviewed
• [Journal Article] Correlated electron systems periodically driven out of equilibrium-Floquet+DMFT formalism (2008)
  • Author(s): N. Tsuji, T. Oka and H. Aoki
  • Journal Title: Phys.Rev.B 78
  • Peer Reviewed
• [Presentation] Possible confinement phase in carbon-nanotubes and the extended massive Schwinger model (2011)
  • Author(s): Takashi Oka, Hideo Aoki
  • Organizer: APS March Meeting
  • Place of Presentation: Dallas USA.
  • Year and Date: 2011-03-24
• [Presentation] A confinement phase in carbon nanotubes as captured by the extended massive Schwinger model (2011)
  • Author(s): T.Oka, H.Aoki
  • Organizer: American Physical Society March Meeting
  • Place of Presentation: Dallas (USA)
  • Year and Date: 2011-03-24
• [Presentation] Strong field physics in a strongly correlated system (2011)
  • Author(s): Takashi Oka
  • Organizer: DMQS2011
  • Place of Presentation: Tokyo Japan.
  • Year and Date: 2011-02-14
• [Presentation] Strong field physics in a strongly correlated system (2010)
  • Author(s): Takashi Oka
  • Organizer: PIF2010
  • Place of Presentation: Tsukuba, Japan.
  • Year and Date: 2010-11-25
• [Presentation] Strong field physics in condensed matter (2010)
  • Author(s): T.Oka, H.Aoki
  • Organizer: PIF2010
  • Place of Presentation: 高エネルギー加速器研究機構(茨城県)
  • Year and Date: 2010-11-25
• [Presentation] 電子系における非平衡現象:多体Schwinger-Landau-Zener機構・光誘起ホール効果 (2010)
  • Author(s): 岡隆史
  • Organizer: 非平衡系の物理一非平衡ゆらぎと集団挙動
  • Place of Presentation: 湯川研究所(京都府)
  • Year and Date: 2010-11-19
• [Presentation] All Optical Measurement Proposed for the Photovoltaic Hall Effect (2010)
  • Author(s): T.Oka, H.Aoki
  • Organizer: HMF19
  • Place of Presentation: 福岡国際会議場(福岡県)
  • Year and Date: 2010-08-05
• [Presentation] All optical measurement proposed for the photovoltaic Hall effect (2010)
  • Author(s): Takashi Oka, Hideo Aoki
  • Organizer: HMF19
  • Place of Presentation: Fukuoka Japan.
  • Year and Date: 2010-08-04
• [Presentation] Mott insulators in strong electric fields studied by the generalized Bethe ansatz (2010)
  • Author(s): Takashi Oka, Hideo Aoki
  • Organizer: APS March Meeting
  • Place of Presentation: Portland, USA.
  • Year and Date: 2010-03-23
• [Presentation] 強相関系光励起による物性制御とその展望 (2010)
  • Author(s): 岡隆史
  • Organizer: 日本物理学会「半導体のキャリアドーピングと光」シンポジウム
  • Place of Presentation: 岡山
  • Year and Date: 2010-03-20
• [Presentation] Dielectric breakdown of Mott insulators and the many-body Schwinger mechanism (2010)
  • Author(s): T.Oka, H.Aoki
  • Organizer: APS March meeting
  • Place of Presentation: Portland, USA
  • Year and Date: 2010-03-17
• [Presentation] Photo-induced Hall effect in graphene - effect of boundary types (2009)
  • Author(s): Takashi Oka, Hideo Aoki
  • Organizer: Yamada Conference LXIII : PIPT 2008 J.Phys.: Conf.Ser.148, 012061
  • Place of Presentation: Osaka Japan
  • Year and Date: 2009-11-11
• [Presentation] 強電場中の一次元強相関電子系の非平衡現象と時間依存DMRG (2009)
  • Author(s): 岡隆史
  • Organizer: 日本物理学会「密度行列繰り込み群(DMRG)の新展開」シンポジウム
  • Place of Presentation: 熊本
  • Year and Date: 2009-09-25
• [Presentation] Non-equilibrium Superconducting Transition in Correlated Electron Systems (2009)
  • Author(s): Takashi Oka, Hideo Aoki
  • Organizer: ISCOM09
  • Place of Presentation: Niseko, Japan.
  • Year and Date: 2009-09-15
• [Presentation] Non-equilibrium superconducting transition in correlated electron systems (2009)
  • Author(s): T.Oka, H.Aoki
  • Organizer: ISCOM2009
  • Place of Presentation: ニセコ 北海道
  • Year and Date: 2009-09-13
• [Presentation] Non-equilibrium superconductivity in a correlated electron system studied with the Keldysh+FLEX approach (2009)
  • Author(s): Takashi Oka, Hideo Aoki
  • Organizer: 9th International Conference on Materials and Mechanisms of Superconductivity
  • Place of Presentation: Tokyo, Japan.
  • Year and Date: 2009-09-09
• [Presentation] Photovoltaic Berry curvature in the honeycomb lattice (2009)
  • Author(s): Takashi Oka, Hideo Aoki
  • Organizer: ICM2009
  • Place of Presentation: Karlsruhe, Germany.
  • Year and Date: 2009-07-27
• [Presentation] Photovoltaic Hall effect proposed for graphene-Hall effect in the absence of uniform B with a geometric origin (2009)
  • Author(s): T.Oka, H.Aoki
  • Organizer: ICM 2009
  • Place of Presentation: Karlsruhe, Germany
  • Year and Date: 2009-07-27
• [Presentation] Photovoltaic Hall effect and its topological origin (2009)
  • Author(s): Takashi Oka, Hideo Aoki
  • Organizer: TOPO09
  • Place of Presentation: Dresden, Germany.
  • Year and Date: 2009-07-13
• [Presentation] バイアス電圧下の強相関電子系における非平衡超伝導の理論 (2009)
  • Author(s): 岡隆史, 青木秀夫
  • Organizer: 日本物理学会
  • Place of Presentation: 東京
  • Year and Date: 2009-03-28
• [Presentation] Photovoltaic Hall effect in Dirac systems - application to graphene (2009)
  • Author(s): Takashi Oka, Hideo Aoki
  • Organizer: APS March Meeting
  • Place of Presentation: Pittsburgh USA.
  • Year and Date: 2009-03-18
• [Presentation] Photovoltaic Hall Effect in Dirac systems-Application to Graphene (2009)
  • Author(s): T. Oka, H. Aoki
  • Organizer: American Physical Society March Meeting
  • Place of Presentation: Pittsburgh
  • Year and Date: 2009-03-17
• [Presentation] Photo-induced Hall effect in graphene (2008)
  • Author(s): T. Oka, H. Aoki
  • Organizer: PIPT2008
  • Place of Presentation: 大阪
  • Year and Date: 2008-11-13
• [Presentation] Anomalous quantum materials in strong electric fields - Mott insulator and graphene (2008)
  • Author(s): Takashi Oka, Hideo Aoki
  • Organizer: Int.Symposium on Anomalous Quantum Materials
  • Place of Presentation: Tokyo Japan.
  • Year and Date: 2008-11-10
• [Presentation] Photo-induced metallic liquid in a one-dimensional Mott insulator in AC fields (2008)
  • Author(s): T. Oka, H. Aoki
  • Organizer: Low Temperature 25
  • Place of Presentation: Amsterdam
  • Year and Date: 2008-08-10
• [Presentation] Photo-induced metallic liquid in a one-dimensional Mott insulator in AC fields (2008)
  • Author(s): Takashi Oka, Hideo Aoki
  • Organizer: LT25 J.Phys.: Conf.Ser.150, 042152
  • Place of Presentation: Amsterdam Netherland
  • Year and Date: 2008-08-09
• [Presentation] Photo-induced Tomonaga-Luttinger-like liquid in a one-dimensional Mott insulator (2008)
  • Author(s): Takashi Oka, Hideo Aoki
  • Organizer: Workshop on Topological Aspects of Solid State Physics
  • Place of Presentation: Kyoto Japan.
• [Book] 表面科学(グラフェンのトポロジカルな性質とその光制御)32 (2011)
  • Author(s): 岡隆史、青木秀夫
  • Publisher: 日本表面科学会
• [Book] 光学(グラフェンにおける光誘起ホール効果とカゴメ・フォトニック結晶における光の局在)39 (2010)
  • Author(s): 岡隆史、青木秀夫
  • Publisher: 日本光学会誌
• [Book] Nonequilibrium Quantum Breakdown in a Strongly Correlated Electron System(in Quantum and Semi-classical Percolation and Breakdown in Disordered Solids)(edited by A.K.Sen, K.K.Bardhan, B.K.Chakrabarti)Lecture Note in Physics Vol.762 (2008)
  • Author(s): T.Oka, H.Aoki
  • Publisher: Springer-Verlag
• [Remarks] ホームページ等
  • URL: http://cms.phys.s.u-tokyo.ac.jp/~oka
• [Remarks]
  • URL: http://cms.phys.s.u-tokyo.ac.jp/~oka/index.html
• [Remarks]
  • URL: http://cms.phys.s.u-tokyo.ac.jp/~oka/index.html
• [Remarks]
  • URL: http://cms.phys.s.u-tokyo.ac.jp/~oka/index.html