Coulomb "Blockade" of nuclear spin relaxation in quantum dots |
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| Authors: | Lyanda-Geller Y B Aleiner I L Altshuler B L |
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| Institution: | Naval Research Laboratory, Washington DC 20375 and Beckman Institute and Department of Physics, University of Illinois, Urbana 61801, USA. |
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| 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. |
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