Three-Orbital Kondo Effect in Single Quantum Dot System with Plural Electrons
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- Kita Tomoko
- Department of Applied Physics, Osaka University
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- Sakano Rui
- Department of Applied Physics, Osaka University
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- Ohashi Takuma
- Department of Physics, Osaka University
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- Suga Sei-ichiro
- Department of Applied Physics, Osaka University
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Abstract
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.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 77 (9), 094707-094707, 2008
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282679174116480
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- NII Article ID
- 130005437097
- 110006933492
- 210000107428
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- NII Book ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 9646552
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed
