OGURI Akira

写真a

Search Institutional Repository


Title

Professor

Laboratory location

Sugimoto Campus

Degree 【 display / non-display

  • Nagoya University -  Doctor of Science

Research Areas 【 display / non-display

Solid-State Physics I (Optical Properties, Semiconductor and Dielectrics), Solid-State Physics II (Magnetism, Metal Physics, Cryogenics), Physical Properties in General (including BasicTheories)

Research Career 【 display / non-display

  • Kondo effect in quantum dots

    (Collaboration in Japan)

    Keyword in research subject:  mesoscopic systems, electron correlation, Kondo effect

  • Quantum transport phenomena in nonequilibrium systems

    (Collaboration in Japan)

    Keyword in research subject:  Quantum transport, nonequilibrium systems

  • Condensed matter theory for strongly correlated electron systems

    (Collaboration in Organization)

    Keyword in research subject:  strong correlation

Association Memberships 【 display / non-display

  • THE PHYSICAL SOCIETY OF JAPAN

Current Career 【 display / non-display

  • Osaka City University   Graduate School of Science   Mathematics and Physics Course   Professor  

Graduate School 【 display / non-display

  •  
    -
    1988

    Nagoya University  Graduate School, Division of Natural Science 

Graduating School 【 display / non-display

  •  
    -
    1983

    Hokkaido University   Faculty of Engineering  

 

Published Papers 【 display / non-display

  • Fermi liquid theory for nonlinear transport through a multilevel Anderson impurity

    Yoshimichi Teratani, Rui Sakano, and Akira Oguri

    Physical Review Letters  125   216801-1 - 216801-6 2020.11  [Refereed]

    DOI arXiv

  • Field-induced SU(4) to SU(2) Kondo crossover in a half-filling nanotube dot: spectral and finite-temperature properties

    Yoshimichi Teratani, Rui Sakano, and Akira Oguri

    Physical Review B  102   165106-1 - 165106-23 2020.10  [Refereed]

    DOI

  • Three-body correlations in nonlinear response of correlated quantum liquid

    T. Hata, Y. Teratani, T. Arakawa, S. Lee, M. Ferrier, R. Deblock, R. Sakano, A. Oguri and K. Kobayashi

    (プレプリント) DOI:10.21203/rs.3.rs-91730/v1  2020.10

    DOI

  • Three Body Correlations in a Non-equilibrium Current through an SU(N) Anderson Impurity at Arbitrary Fillings

    Yoshimichi Teratani, and Akira Oguri

    JPS Conf. Proc.  30   011175-1 - 011175-6 2020.04  [Refereed]

  • Effects of Tunnel-coupling Asymmetries on Fermi-liquid Transport through an Anderson Impurity

    Kazuhiko Tsutsumi, Yoshimichi Teratani, Akira Oguri, and Rui Sakano.

    JPS Conf. Proc.  30   011174-1 - 011174-6 2020.04  [Refereed]

display all >>

Books etc 【 display / non-display

  • Andreev tunneling through an interacting quantum dot: Numerical renormalization group approach

    Yoichi Tanaka, Norio Kawakami, and Akira Oguri (Part: Supervisor )

    AIP Conference Proceedings  2007

Review Papers (Misc) 【 display / non-display

display all >>

Conference Activities & Talks 【 display / non-display

  • Effects of three-body correlations on nonlinear current noise through an N-level Anderson impurity: NRG and large N studies

    Yoshimichi Teratani, Akira Ogur, and , Rui Sakano

    American Physical Society March Meeting (ONLINE)  2021.03 

  • Fermi liquid theory for nonequilibrium Kondo effect

    Akira Oguri

    10th WorkShop on Semiconductor/Superconductor Quantum Coherence effect and Quantum information (ONLINE)  2020.12 

  • Effects of Tunnel-coupling Asymmetries on Fermi-liquid Transport through an Anderson Impurity

    Kazuhiko Tsutsumi, Yoshimichi Teratani, Akira Oguri, and Rui Sakano

    International Conference on Strongly Correlated Electron Systems 2019 (September 23-28, 2019, Okayama)   2019.09 

  • Three body correlations in a non-equilibrium current through an SU(N) Anderson impurity at arbitrary fillings

    Yoshimichi Teratani, and Akira Oguri

    International Conference on Strongly Correlated Electron Systems 2019 (September 23-28, 2019, Okayama)   2019.09 

  • Higher-order Fermi-liquid corrections for thermoelectric transport through an Anderson impurity

    Akira Oguri, and Yoshimichi Teratani

    International Conference on Strongly Correlated Electron Systems 2019 (September 23-28, 2019, Okayama)   2019.09 

display all >>

Grant-in-Aid for Scientific Research 【 display / non-display

  • Theoretical study on highly correlated quantum states and current fluctuations of interacting electrons in nanoscale and mesoscale systems

    Project/Area Number : 18K03495  Grant-in-Aid for Scientific Research(C) Representative

    Project Year :

    2018.04
    -
    2023.03
     

  • Theoretical study on interplays of quantum interference and inter-electron interaction in nanoscale and mesoscale systems

    Project/Area Number : 26400319  Grant-in-Aid for Scientific Research(C) Representative

    Project Year :

    2014.04
    -
    2018.03
     

  • Current fluctuation by non-equilibrium Kondo effect in quantum dot

    Project/Area Number : 25800174  Grant-in-Aid for Young Scientists(B) Partaker / Other

    Project Year :

    2013.04
    -
    2016.03
     

    Partaker : Oguri Akira, Kobayashi Kensuke

     View Summary

    We have studied that dynamic properties of non-equilibrium steady states of the Kondo effect which is a typical quantum many-body effect formed in quantum dot, and non-equilibrium current fluctuations induced by them. It is succeeded to experimentally observe shot noise and effective charge state of the Kondo state in a carbon-nanotube quantum dot with high accuracy in collaboration with an experimental group. The exact solution of the impurity Anderson model which describe quantum dot systems, is derived at the high bias-voltage or high temperature limits, and many-body effects at the high energy limit is elucidated. Furthermore, it is elucidated that, entanglement properties of the quasiparticle pairs forming in non-equilibrium current at low bias-voltages, holds quantum-mechanical properties which are never achieved by classical mechanics.

  • Theoretical study on quantum transport through strongly correlated electrons in quantum dots and nano materials

    Project/Area Number : 23540375  Grant-in-Aid for Scientific Research(C) Representative

    Project Year :

    2011
    -
    2013
     

    Partaker : SAKANO Rui, TANAKA Yoichi, HEWSON A. C., SHIMAMOTO Masashi, AWANE Miyuki, SATO Izumi

     View Summary

    We have studied effects of inter-electron interaction on transport through quantum dots and nanoscale materials. We have proposed a novel large N expansion, where N is an orbital degeneracy. This method is different from the conventional ones and enables us a systematic calculation beyond the RPA. We have also obtained exact interacting Green's function for the Anderson impurity out of equilibrium at high bias voltages. Furthermore, we have provided an exact expression for nonequilibrium current fluctuations through a quantum dot, which includes a ferromagnetic Hund's rule coupling, in the low-energy Fermi liquid regime. Our result shows that the shot noise can be expressed in terms of renormalized parameters of quasiparticles defined with respect to equilibrium ground state in the particle-hole symmetric case. We have also studied interplay between Kondo and Andreev-Josephson effects of a quantum dot coupled to three terminals, consisting of normal and superconducting leads.

  • Theoretical study of the Kondo effects in quantum dots and nanomaterials

    Project/Area Number : 20540319  Grant-in-Aid for Scientific Research(C) Representative

    Project Year :

    2008
    -
    2010
     

    Partaker : NISHIKAWA Yunori, HEWSON A.C., TANAKA Yoichi, SAKANO Rui, SHIMAMOTO Masashi

     View Summary

    We have studied many body effects on transport through quantum dots, realized in heterostructures, carbon nanotube, and so on. Specifically, we have investigated competition between Nagaoka ferromagnetism and Kondo effect taking place in triple dots. Furthermore, we have shown, using the numerical renormalization group approach, that interplays between the Josephson effect, Andreev resonance, and strong correlation provide interesting variations in the ground states. We have also studied the Kondo behavior of nonequilibrium transport, such as the shot noise and steady current.

display all >>