Magnetic-flux-dependent Kondo effect in a quantum dot embedded in an Aharonov-Bohm ring

R. Yoshii, M. Eto

研究成果: Article査読

抄録

The Kondo effect is examined in a quantum dot embedded in an Aharonov-Bohm (AB) ring when the size of the AB ring is much smaller than the Kondo cloud. Using the scaling method, an analytical expression is given for the Kondo temperature Tk, as a function of the AB phase φ for the magnetic flux penetrating the ring. Tk is significantly modulated by the flux. Tk is minimal when φ 0 and maximal when φ π. The scaling method also yields the logarithmic corrections to the conductance at finite temperatures of T ≫ Tk.

本文言語English
論文番号022104
ジャーナルJournal of Physics: Conference Series
150
2
DOI
出版ステータスPublished - 2009 1 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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