Relaxation of Hole Spins in Quantum Dots via Two-Phonon Processes

Mircea Trif, Pascal Simon, and Daniel Loss
Phys. Rev. Lett. 103, 106601 – Published 1 September 2009

Abstract

We investigate theoretically spin relaxation in heavy-hole quantum dots in low external magnetic fields. We demonstrate that two-phonon processes and spin-orbit interaction are experimentally relevant and provide an explanation for the recently observed saturation of the spin-relaxation rate in heavy-hole quantum dots with vanishing magnetic fields. We propose further experiments to identify the relevant spin-relaxation mechanisms in low magnetic fields.

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  • Received 23 February 2009

DOI:https://doi.org/10.1103/PhysRevLett.103.106601

©2009 American Physical Society

Authors & Affiliations

Mircea Trif1, Pascal Simon1,2, and Daniel Loss1

  • 1Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
  • 2Laboratoire de Physique des Solides, CNRS UMR-8502 University Paris Sud, 91405 Orsay Cedex, France

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Issue

Vol. 103, Iss. 10 — 4 September 2009

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