Berlin 2012 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 48: Focus Session: Spintronics (jointly with MA)

HL 48.4: Vortrag

Mittwoch, 28. März 2012, 10:45–11:00, EW 201

Spin Hall Effect on Triangular Lattice — •Paul Wenk¹, Georges Bouzerar^{1, 2}, and Stefan Kettemann^{1, 3} — ¹School of Engineering and Science, Jacobs University Bremen, Campus Ring 1, Bremen 28759, Germany — ²Institut Néel, 25 avenue des Martyrs, B.P. 166, 38042 Grenoble Cedex 09, France — ³Asia Pacific Center for Theoretical Physics and Division of Advanced Materials Science Pohang University of Science and Technology (POSTECH) San31, Hyoja-dong, Nam-gu, Pohang 790-784, South Korea

We investigate the intrinsic Spin Hall Effect on a two-dimensional triangular lattice in the presence of both Rashba and Dresselhaus spin-orbit coupling. This type of lattice is especially interesting due to the build-in geometrical frustration and absence of particle-hole symmetry. We analyze the Spin Hall Effect by applying Chebyshev expansion and Kernel Polynomial Method, which allows for the variation of spin-Hall conductivity as a function of disorder strength on large system sizes.