Regensburg 2013 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 5: Spintronics: mainly interfaces and heterostructures
HL 5.3: Vortrag
Montag, 11. März 2013, 10:00–10:15, H16
Anisotropic Thermal Transport Through Magnetic Tunnel Junctions — •Carlos López-Monís, Alex Matos-Abiague, and Jaroslav Fabian — Institute für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Tunneling anisotropic magnetoresistance (TAMR) has been observed in Fe/GaAs/Au tunneling heterostructures [1]. Theoretically, the two-fold symmetry observed in the TAMR was shown to be originated by the C2v symmetry of the tunneling probability, resulting from the interference between Bychkov-Rashba and Dresselhaus spin-orbit interactions [2]. In this talk I shall discuss further extensions to this model in order to account for thermal spin transport phenomena in magnetic tunnel junctions in the presence of spin-orbit interaction. We acknowledge financial support from the DFG via No. SPP 1538.
[1] J. Moser, A. Matos-Abiague, D. Schuh, W. Wegscheider, J. Fabian and D. Weiss, Phys. Rev. Lett. 99, 056601 (2007).
[2] A. Matos-Abiague and J. Fabian, Phys. Rev. B 79, 155303 (2009).