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Coulomb "Blockade" of nuclear spin relaxation in quantum dots. | LitMetric

Coulomb "Blockade" of nuclear spin relaxation in quantum dots.

Phys Rev Lett

Naval Research Laboratory, Washington DC 20375 and Beckman Institute and Department of Physics, University of Illinois, Urbana 61801, USA.

Published: September 2002

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.

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http://dx.doi.org/10.1103/PhysRevLett.89.107602DOI Listing

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