Charging Effects on Nuclear Spin Relaxation in Quantum Dots

被引：0
|
作者：
Y. B. Lyanda-Geller
I. L. Aleiner
B. L. Altshuler
机构：
[1] Naval Research Laboratory,Beckman Institute and Department of Physics
[2] University of Illinois,Department of Physics
[3] Columbia University,Department of Physics
[4] Princeton University,undefined
[5] NEC Research Institute,undefined
来源：
Journal of Superconductivity | 2003年 / 16卷
关键词：
spin relaxation; nuclear magnetic resonance; quantum dots; Coulomb blockade; spin–orbit interaction;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We study the mechanism of nuclear spin relaxation in quantum dots due to the electron exchange with 2D gas. We show that the nuclear spin relaxation rate T1−1 is dramatically affected by the Coulomb blockade (CB) and can be controlled by gate voltage. In the case of strong spin–orbit (SO) coupling the relaxation rate is maximal in the CB valleys whereas for the weak SO coupling the maximum of 1/T1 is near the CB peaks. The physical mechanism of nuclear spin relaxation rate at strong SO coupling is identified as Debye–Mandelstam–Leontovich–Pollak–Geballe relaxational mechanism.
引用
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页码：751 / 761
页数：10
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