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

R. Yoshii, M. Eto

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Article number022104
JournalJournal of Physics: Conference Series
Volume150
Issue number2
DOIs
Publication statusPublished - 2009 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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