How long does it take for the Kondo effect to develop?

被引：125
|
作者：
Nordlander, P [1 ]
Pustilnik, M
Meir, Y
Wingreen, NS
Langreth, DC
机构：
[1] Rice Univ, Dept Phys, Houston, TX 77251 USA
[2] Rice Univ, Rice Quantum Inst, Houston, TX 77251 USA
[3] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel
[4] NEC Res Inst, Princeton, NJ 08540 USA
[5] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA
来源：
PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 04期
关键词：
D O I：
10.1103/PhysRevLett.83.808
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The time development of the Kondo effect is theoretically investigated by studying a quantum dot suddenly shifted into the Kondo regime by a change of voltage on a nearby gate. Using time-dependent versions of both the Anderson and Kondo Hamiltonians, it is shown that after a time t following the voltage shift, the form of the Kondo resonance matches the time-independent resonance at an effective temperature T-eff = T/tanh(pi Tt/2). Relevance of the buildup of the Kondo resonance to the transport current through a quantum dot is demonstrated.
引用
收藏
页码：808 / 811
页数：4
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