Thermoelectric effect of multiferroic oxide interfaces

Details Thermoelectric effect of multiferroic oxide interfaces Thermoelectric effect of multiferroic oxide interfaces

2010-12-22

arxiv.org/abs/1012.4865v1

Appl. Phys. Lett. 98, 042110 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We investigate the thermoelectric properties of electrons at the interface of oxide heterostructure and in the presence of a multiferroic oxide with spiral spin order. We find there is no (spin) Hall current generated by the temperature gradient. A Seebeck effect is however present. Due to the magnetoelectric coupling, the charge and thermal conductivities are electrically controllable via the spin spiral helicity. Moreover, the thermopower exhibits a sign change when tuning electro-statically the carrier density.

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