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arXiv · 1205.5650

Spin wave amplification driven by heat flow: the role of damping and exchange interaction

S. Borlenghi·M. Franchin·H. Fangohr·L. Bergqvist·a. Delin
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Abstract

In this article we report on micromagnetic simulations performed on a permalloy nanostructure in presence of a uniform thermal gradient. Our numerical simulations show that heat flow is an effective mean to compensate the damping, and that the gradients at which spin-wave amplification is observed are experimentally accessible. In particular, we have studied the role of the Gilbert damping parameter on spin-wave amplification.

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S. Borlenghi, M. Franchin, H. Fangohr, L. Bergqvist, a. Delin. 2012-05-25. Spin wave amplification driven by heat flow: the role of damping and exchange interaction. https://arxiv.org/abs/1205.5650

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