Berlin 2008 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 31: Poster II

HL 31.59: Poster

Tuesday, February 26, 2008, 16:30–19:00, Poster D

Classical ballistic transport in a triangular shaped cavity — Roland Ketzmerick and •Martin Richter — Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden, Germany

Recent magneto-resistance measurements on semiconductor heterostructures with a triangular shaped gate revealed unexpectedly detailed features in R(B) [D. Maryenko et al., unpublished] beyond simple commensurabilities. We explain this by classical ballistic transport and demonstrate the importance of the phase-space structure, the width of the openings, and the softness of the potential.