Kondo Effect in Quantum Dot Systems : Numerical Renormalization Group Study(<SPECIAL TOPICS>Kondo Effect-40 Years after the Discovery)

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概要

• 論文の詳細を見る

• We review recent theoretical studies on the Kondo effect in tunneling through quantum dots. The calculation is carried out using the numerical renormalization group method. It is shown that two Coulomb peaks merge into a plateau for the case of an odd number of electrons in the dot. The anomaly of tunneling conductance in an even number of electrons with local spin singlet-triplet degeneracy is studied. The two-impurity Kondo effect, in which a competition between the Kondo coupling and two localized spins coupling occurs, causes a conductance peak in the double quantum dot. The Aharonov-Bohm (AB) oscillation in the conductance of a quantum dot embedded in an AB circuit is also studied.

• 社団法人日本物理学会の論文
• 2005-01-15

著者

• SAKAI Osamu

  Department of Physics, Tokyo Metropolitan University

• IZUMIDA Wataru

  Department of Physics,Tohoku University

• Sakai Osamu

  Department Of Electronic Science And Engineering Kyoto University

• Izumida W

  Ntt Atsugi Res. And Dev. Center Kanagawa

• Izumida Wataru

  Department Of Physics Tohoku University

• Izumida W

  Jst‐erato Kanagawa Jpn

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