Anomalous Spin-Related Quantum Phase in Mesoscopic Hole Rings

Details Anomalous Spin-Related Quantum Phase in Mesoscopic Hole Rings Anomalous Spin-Related Quantum Phase in Mesoscopic Hole Rings

2009-05-16

arxiv.org/abs/0905.2661v2

Phys. Rev. B 81, 155326 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures, RevTex

Scientific paper

10.1103/PhysRevB.81.155326

We have obtained numerically exact results for the spin-related geometric quantum phases that arise in p-type semiconductor ring structures. The interplay between gate-controllable (Rashba) spin splitting and quantum-confinement-induced mixing between hole-spin states causes a much higher sensitivity of magnetoconductance oscillations to external parameters than previously expected. Our results imply a much-enhanced functionality of hole-ring spin-interference devices and shed new light on recent experimental findings.

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