Coulomb ``Blockade'' of Nuclear Spin Relaxation in Quantum Dots

Coulomb “Blockade” of Nuclear Spin Relaxation in Quantum Dots

Y. B. Lyanda-Geller, I. L. Aleiner, and B. L. Altshuler

Phys. Rev. Lett. 89, 107602 – Published 16 August 2002

Abstract

We study the mechanism of nuclear spin relaxation in quantum dots due to the electron exchange with the 2D gas. We show that the nuclear spin relaxation rate $1 / T_{1}$ 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 $1 / T_{1}$ is near the CB peaks.

Received 1 December 2001

DOI:https://doi.org/10.1103/PhysRevLett.89.107602

Authors & Affiliations

Y. B. Lyanda-Geller^1,2, I. L. Aleiner³, and B. L. Altshuler^4,5

¹Naval Research Laboratory, Washington DC 20375
²Beckman Institute and Department of Physics, University of Illinois, Urbana, Illinois 61801
³Department of Physics and Astronomy, SUNY at Stony Brook, Stony Brook, New York 11794
⁴Department of Physics, Princeton University, Princeton, New Jersey 08544
⁵NEC Research Institute, Princeton, New Jersey 08540

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Issue

Vol. 89, Iss. 10 — 2 September 2002

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