Weak localization in mesoscopic hole transport: berry phases and classical correlations.
نویسندگان
چکیده
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 magnetoconductance profile distinctly different from electron transport. Nonuniversal 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 confirmed by numerical calculations.
منابع مشابه
Supplemental Material for the manuscript LW12553 Weak localization in mesoscopic hole transport: Berry phases and classical correlations
In this supplement we provide additional information to our calculations on mesoscopic hole transport [1]. In Section A we compare the band-structure and Berry phases between the 4-band Hamiltonian used in [1] with the more general 8× 8 Hamiltonian. In Section B we provide a derivation of Eq. (7) in [1]. In Section C we consider weak localization in 2-band and 4-band based models for HgTe cavit...
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ورودعنوان ژورنال:
- Physical review letters
دوره 106 14 شماره
صفحات -
تاریخ انتشار 2011