Magnetically Tunable Kondo - Aharonov-Bohm Effect in a Triangular Quantum Dot
强关联电子
2007-05-23 v2 介观与纳米尺度物理
摘要
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.
引用
@article{arxiv.cond-mat/0507488,
title = {Magnetically Tunable Kondo - Aharonov-Bohm Effect in a Triangular Quantum Dot},
author = {T. Kuzmenko and K. Kikoin and Y. Avishai},
journal= {arXiv preprint arXiv:cond-mat/0507488},
year = {2007}
}
备注
4 pages, 3 .eps figures