Anomalous Kondo effect in a quantum dot at nonzero bias

被引：222
作者：
Simmel, F
Blick, RH
Kotthaus, JP
Wegscheider, W
Bichler, M
机构：
[1] Univ Munich, Ctr NanoSci, D-80539 Munich, Germany
[2] Univ Munich, Sekt Phys, D-80539 Munich, Germany
[3] Tech Univ Munich, Walter Schottky Inst, D-85748 Munich, Germany
来源：
PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 04期
关键词：
D O I：
10.1103/PhysRevLett.83.804
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present measurements on the Kondo effect in a small quantum dot connected strongly to one lead and weakly to the other. The conductance of the dot reveals an offset of the Kondo resonance at zero magnetic field. While the resonance persists in the negative bias regime, it is suppressed in the opposite direction. This demonstrates the pinning of the Kondo resonance to the Fermi levels of the leads.
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页码：804 / 807
页数：4
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