Anisotropic thermoelectric effect in helimagnetic tunnel junctions

Details Anisotropic thermoelectric effect in helimagnetic tunnel junctions Anisotropic thermoelectric effect in helimagnetic tunnel junctions

2011-05-16

arxiv.org/abs/1105.3075v1

Appl. Phys. Lett. 98, 192111 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Thermoelectric transport across normal-metal/helical-multiferroic/ferromagnetic heterojunctions is theoretically investigated. We find a anisotropic charge and spin thermopower with a $C_{2v}$ symmetry. The angular dependence on the magnetization orientation of the ferromagnetic layer is substantiated by a phenomenological theory based on the symmetry of the effective spin-orbit interaction induced by the topology of the spiral magnetic order in the multiferroic barrier.

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