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

被引：87
|
作者：
Kuzmenko, T [1 ]
Kikoin, K
Avishai, Y
机构：
[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel
[2] Ben Gurion Univ Negev, Ilse Katz Ctr Nanotechnol, IL-84105 Beer Sheva, Israel
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 04期
关键词：
D O I：
10.1103/PhysRevLett.96.046601
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
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 C-3v) 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.
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页数：4
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