Magnetic Nernst effect
Sylvain D. Brechet, Jean-Philippe Ansermet
TL;DR
This paper predicts a Magnetic Nernst effect where a voltage with DC and AC components arises across a Pt electrode due to inhomogeneous magnetic fields generated by magnetostatic waves in YIG, influenced by temperature gradients.
Contribution
It introduces the concept of a Magnetic Nernst effect, a magnetic analog to the Seebeck effect, in ferromagnet-paramagnet systems, expanding understanding of thermomagnetic phenomena.
Findings
Voltage with DC and AC components observed across Pt electrode
Voltage depends on magnetic field orientation and frequency
Distinct from spin pumping effects
Abstract
The thermodynamics of irreversible processes in continuous media predicts the existence of a Magnetic Nernst effect that results from a magnetic analog to the Seebeck effect in a ferromagnet and magnetophoresis occurring in a paramagnetic electrode in contact with the ferromagnet. Thus, a voltage that has DC and AC components is expected across a Pt electrode as a response to the inhomogeneous magnetic induction field generated by magnetostatic waves of an adjacent YIG slab subject to a temperature gradient. The voltage frequency and dependence on the orientation of the applied magnetic induction field are quite distinct from that of spin pumping.
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