Berlin 2018 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 50: HL Poster IV

HL 50.41: Poster

Thursday, March 15, 2018, 19:00–21:00, Poster B

Quantum mechanical simulations of the magneto-conductivity of two dimensional Lorentz-gases — •Christopher Kraus, Jakob Schluck, and Thomas Heinzel — Heinrich-Heine Universität

An electron gas with poisson-distributed obstacles is known as Lorentz-gas. Even though it has been studied for more than 20 years some properties of the magneto-conductivity of such systems are not fully understood. Since previous simulations in the classical regime deviated from the experiments, especially for high scatterer densities, it seems natural to look into quantum mechanics for further insight. By using Kwant [1], a Python package with focus on quantum transport, we simulate the magneto-cunductivity in the quantum regime and compare our results with data of experiments and classical simulations. Reproducing aspects of the experimental data in our simulation that were absent in classical simulations shows that they are of quantum mechanical origin.

[1] Groth, M. Wimmer, A. R. Akhmerov, X. Waintal, Kwant: a software package for quantum transport, New J. Phys. 16, 063065, (2014)