Selective Dynamic Nuclear Spin Polarization in Spin-Blocked Double-Dot

Details Selective Dynamic Nuclear Spin Polarization in Spin-Blocked Double-Dot Selective Dynamic Nuclear Spin Polarization in Spin-Blocked Double-Dot

2004-02-16

arxiv.org/abs/cond-mat/0402428v2

Phys. Rev. B 71, 033307 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.71.033307

We study the mechanism of dynamical nuclear spin polarization by hyperfine interaction in spin-blocked double quantum dot system. We calculate the hyperfine transition rates and solve the master equations for the nuclear spins. Specifically, we incorporate the effects of the nuclear quadrupole coupling due to the doping-induced local lattice distortion and strain. Our results show that nuclear quadrupole coupling induced by the 5% indium substitution can be used to explain the recent experimental observation of missing arsenic NMR signal in the spin-blocked double dots.

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