Magnetocaloritronic nanomachines

Details Magnetocaloritronic nanomachines Magnetocaloritronic nanomachines

2009-10-30

arxiv.org/abs/0910.5760v1

A. A. Kovalev and Y. Tserkovnyak, Solid State Commun. 150, 500 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Submitted to "Special issue: Caloritronics" in Solid State Communications

Scientific paper

10.1016/j.ssc.2009.11.012

We introduce and study a magnetocaloritronic circuit element based on a domain wall that can move under applied voltage, magnetic field and temperature gradient. We draw analogies between the Carnot machines and possible devices employing such circuit element. We further point out the parallels between the operational principles of thermoelectric and magnetocaloritronic cooling and power generation and also introduce a magnetocaloritronic figure of merit. Even though the magnetocaloritronic figure of merit turns out to be very small for transition-metal based magnets, we speculate that larger numbers may be expected in ferromagnetic insulators.

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