Magnetically tunable Kondo-Aharonov-Bohm effect in a triangular quantum dot

T. Kuzmenko; K. Kikoin; Y. Avishai

doi:10.1103/PhysRevLett.96.046601

Magnetically tunable Kondo-Aharonov-Bohm effect in a triangular quantum dot

T. Kuzmenko, K. Kikoin, Y. Avishai

Department of Physics

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92 Scopus citations

Abstract

The role of discrete orbital symmetry in mesoscopic physics is manifested in a system consisting of three identical quantum dots forming an equilateral triangle. Under a perpendicular magnetic field, this system demonstrates a unique combination of Kondo and Aharonov-Bohm features due to an interplay between continuous [spin-rotation SU(2)] and discrete (permutation C3v) symmetries, as well as U(1) gauge invariance. The conductance as a function of magnetic flux displays sharp enhancement or complete suppression depending on contact setups.

Original language	English
Article number	046601
Journal	Physical Review Letters
Volume	96
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.96.046601
State	Published - 1 Jan 2006

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.96.046601

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Magnetically tunable Kondo-Aharonov-Bohm effect in a triangular quantum dot

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