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

页码：808 / 811

页数：4

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