title: Coulomb "Blockade" of nuclear spin relaxation in quantum dots.
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.
authors.affiliation: Naval Research Laboratory, Washington DC 20375 and Beckman Institute and Department of Physics, University of Illinois, Urbana 61801, USA.
authors.forename: Y B
authors.initials: YB
authors.lastname: Lyanda-Geller
authors.forename: I L
authors.initials: IL
authors.lastname: Aleiner
authors.forename: B L
authors.initials: BL
authors.lastname: Altshuler