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arXiv · 1403.0490

Nuclear Spin Diffusion Mediated by Heavy Hole Hyperfine Non-Collinear Interactions

Hugo Ribeiro·Franziska Maier·Daniel Loss
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Abstract

We show that the hyperfine mediated dynamics of heavy hole states confined in neutral self- assembled quantum dots leads to a nuclear spin diffusion mechanism. It is found that the oftentimes neglected effective heavy hole hyperfine non-collinear interaction is responsible for the low degree of nuclear spin polarization in neutral quantum dots. Moreover, our results demonstrate that after pumping the nuclear spin state is left in a complex mixed state, from which it is not straightforward to deduce the sign of the Ising-like interactions.

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Hugo Ribeiro, Franziska Maier, Daniel Loss. 2014-03-03. Nuclear Spin Diffusion Mediated by Heavy Hole Hyperfine Non-Collinear Interactions. https://arxiv.org/abs/1403.0490

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