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arXiv · 1311.0123

Thermo-magnonic diode: rectification of energy and magnetization currents

Simone Borlenghi·Stefano Lepri·Lars Bergqvist·Anna Delin
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Abstract

We investigate the dynamics of two coupled macrospins connected to thermal baths at different temperatures. The system behaves like a diode which allows the propagation of energy and mag- netization currents in one direction only. This effect is described by a simple model of two coupled nonlinear oscillators interacting with two independent reservoirs. It is shown that the rectification phenomenon can be interpreted as a a stochastic phase synchronization of the two spin-oscillators. A brief comparison with realistic micromagnetic simulations is presented. This new effect yields promising opportunities in spin-caloritronics devices.

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Simone Borlenghi, Stefano Lepri, Lars Bergqvist, Anna Delin. 2013-11-01. Thermo-magnonic diode: rectification of energy and magnetization currents. https://doi.org/10.1103/physrevb.89.054428

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