Singlet-triplet relaxation induced by confined phonons in nanowire-based quantum dots
Mesoscale and Nanoscale Physics
2010-11-05 v1 Materials Science
Abstract
The singlet-triplet relaxation in nanowire-based quantum dots induced by confined phonons is investigated theoretically. Due to the quasi-one-dimensional nature of the confined phonons, the singlet-triplet relaxation rates exhibit multi-peaks as function of magnetic field and the relaxation rate between the singlet and the spin up triplet state is found to be enhanced at the vicinity of the singlet-triplet anti-crossing. We compare the effect of the deformation-potential coupling and the piezoelectric coupling and find that the deformation-potential coupling dominates the relaxation rates in most cases.
Keywords
Cite
@article{arxiv.1007.1070,
title = {Singlet-triplet relaxation induced by confined phonons in nanowire-based quantum dots},
author = {Y. Yin},
journal= {arXiv preprint arXiv:1007.1070},
year = {2010}
}
Comments
7 pages, 5 figures