We present a theoretical study of spin-3/2 hole transport through mesoscopic rings, based on the spherical Luttinger model. The quasi-one-dimensional ring is created in a symmetric two-dimensional quantum well by a singular-oscillator potential for the radial in-plane coordinate. The quantum-interference contribution to the two-terminal ring conductance exhibits an energy-dependent Aharonov-Anandan phase, even though Rashba and Dresselhaus spin splittings are absent. Instead, confinement-induced heavy-hole - light-hole mixing is found to be the origin of this phase, which has ramifications for magneto-transport measurements in gated hole rings.
Cite
@article{arxiv.0803.0774,
title = {Tunable Aharonov-Anandan phase in transport through mesoscopic hole rings},
author = {M. Pletyukhov and U. Zuelicke},
journal= {arXiv preprint arXiv:0803.0774},
year = {2008}
}
Comments
4 pages, 3 figures, RevTex4, to appear in Phys. Rev. B