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