Weak localization in mesoscopic hole transport: Berry phases and classical correlations

Details Weak localization in mesoscopic hole transport: Berry phases and classical correlations Weak localization in mesoscopic hole transport: Berry phases and classical correlations

2010-09-28

arxiv.org/abs/1009.5571v1

Phys. Rev. Lett. 106, 146801 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.106.146801

We consider phase-coherent transport through ballistic and diffusive two-dimensional hole systems based on the Kohn-Luttinger Hamiltonian. We show that intrinsic heavy-hole light-hole coupling gives rise to clear-cut signatures of an associated Berry phase in the weak localization which renders the magneto-conductance profile distinctly different from electron transport. Non-universal classical correlations determine the strength of these Berry phase effects and the effective symmetry class, leading even to antilocalization-type features for circular quantum dots and Aharonov-Bohm rings in the absence of additional spin-orbit interaction. Our semiclassical predictions are quantitatively confirmed by numerical transport calculations.

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