Tunable Aharonov-Anandan phase in transport through mesoscopic hole rings

Details Tunable Aharonov-Anandan phase in transport through mesoscopic hole rings Tunable Aharonov-Anandan phase in transport through mesoscopic hole rings

2008-03-06

arxiv.org/abs/0803.0774v2

Phys. Rev. B 77, 193304 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures, RevTex4, to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.77.193304

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.

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