Three-Orbital Kondo Effect in Single Quantum Dot System with Plural Electrons(Condensed matter: electronic structure and electrical, magnetic, and optical properties)

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概要

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• We study the Kondo effect and related transport properties in orbitally degenerate vertical quantum dot systems with plural electrons. Applying the non-crossing approximation to the three-orbital Anderson impurity model with the finite Coulomb interaction and Hund-coupling, we investigate the magnetic-field dependence of the conductance and thermopower. We also introduce an additional orbital splitting to take account of the realistic many-body effect in the vertical quantum dot system. It is clarified how the three-orbital Kondo effect influences the transport properties via the modulation of the Kondo temperature and unitary limit of transport quantities due to the change of the symmetry in the system.

• 社団法人日本物理学会の論文
• 2008-09-15

著者

• KITA Tomoko

  Department of Hospital Pharmacy, School of Medicine, Kobe University

• SUGA Sei-ichiro

  Department of Applied Physics, Osaka University

• Kita Tomoko

  Department Of Applied Physics Osaka University

• OHASHI Takuma

  Department of Physics, Osaka University

• SAKANO Rui

  Department of Applied Physics, Osaka University

• Sakano Rui

  Department Of Applied Physics Osaka University:(present Office)department Of Applied Physics Univers

• Sakano Rui

  Department Of Applied Physics Osaka University

• Ohashi Takuma

  Department Of Physics Osaka University

• Ohashi Takuma

  Department Of Applied Physics Osaka University

• Suga Sei-ichiro

  Department Of Applied Physics Osaka University

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