Berlin 2008 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 22: Transport: Poster Session

TT 22.57: Poster

Mittwoch, 27. Februar 2008, 14:00–18:00, Poster B

Weak localization in a two-dimensional hole gas — •Viktor Krückl, Michael Wimmer, Inanc Adagideli, and Klaus Richter — Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg

We investigate phase coherent transport through a quasi two-dimensional hole gas in p-doped III-V semiconductors. The problem is treated within a 4-band Luttinger Hamiltonian in a quasi two-dimensional approximation. The transport properties are calculated in an effective tight-binding approximation by means of the Green function method. We consider the influence of coupling between heavy-holes and light-holes in the diffusive regime and ballistic cavities to point out their effect on weak localization.