Dresden 2014 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 10: Spin-dependent Transport Phenomena

MA 10.8: Vortrag

Montag, 31. März 2014, 17:00–17:15, HSZ 403

Symmetry of spin transport coefficients — •Marten Seemann, Diemo Ködderitzsch, and Hubert Ebert — Universität München, Dept. Chemie, Butenandtstraße 5-13, D-81377 München, Germany

The symmetry of the coefficients appearing in the description of charge, spin and thermo transport is important when discussing experimental setups and theoretical calculations for ordered two- or three dimensional systems. Starting from Kubo’s linear response theory, Kleiner [1] devised a scheme that provides the symmetry of transport coefficients for pairs of operators in perturbation/response providing generalized Onsager relations. We extended this scheme to describe the symmetry of conductivity tensors appearing in spin- and thermo-magneto-galvanic transport. Implications for the appearance of interesting effects described by non-zero elements of the respective conductivity tensors are outlined. Several examples (anomalous Hall and Nernst as well as spin Hall and Nernst conductivities) are given to illustrate this analysis in combination with numerical results obtained using the spin-polarized KKR electronic structure method.

[1] W. H. Kleiner, Phys. Rev. 142, 318 (1966), ibid. 153, 726 (1967)