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Published in

IOP Publishing, Journal of Physics: Condensed Matter, 29(34), p. 295801, 2022

DOI: 10.1088/1361-648x/ac6d9a

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Theory of drift-enabled control in nonlocal magnon transport

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Abstract Electrically injected and detected nonlocal magnon transport has emerged as a versatile method for transporting spin as well as probing the spin excitations in a magnetic insulator. We examine the role of drift currents in this phenomenon as a method for controlling the magnon propagation length. Formulating a phenomenological description, we identify the essential requirements for existence of magnon drift. Guided by this insight, we examine magnetic field gradient, asymmetric contribution to dispersion, and temperature gradient as three representative mechanisms underlying a finite magnon drift velocity, finding temperature gradient to be particularly effective.