Experimental evidence consistent with a magnon Nernst effect in the antiferromagnetic insulator MnPS3

A magnon Nernst effect, an antiferromagnetic analog of the magnon Hall effect in ferromagnetic insulators, has been studied experimentally for the layered antiferromagnetic insulator MnPS3 in contact with two Pt strips. Thermoelectric voltage in the Pt strips grown on MnPS3 single crystals exhibits...

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Bibliographic Details
Published in:Physical review. B 2017-10, Vol.96 (13)
Main Authors: Shiomi, Y, Takashima, R, Saitoh, E
Format: Article
Language:English
Subjects:
Antiferromagnetism
Cooling effects
Crystals
Domains
Electric potential
Ferromagnetism
Hall effect
Hybrid structures
Insulators
Nernst-Ettingshausen effect
Single crystals
Temperature dependence
Thermoelectricity
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Summary:A magnon Nernst effect, an antiferromagnetic analog of the magnon Hall effect in ferromagnetic insulators, has been studied experimentally for the layered antiferromagnetic insulator MnPS3 in contact with two Pt strips. Thermoelectric voltage in the Pt strips grown on MnPS3 single crystals exhibits nonmonotonic temperature dependence at low temperatures, which is unlikely to be explained by electronic origins in Pt but can be ascribed to the inverse spin Hall voltage induced by a magnon Nernst effect. Control of antiferromagnetic domains in the MnPS3 crystal by magnetoelectric cooling is found to modulate the low-temperature thermoelectric voltage in Pt, which is evidence consistent with the emergence of the magnon Nernst effect in Pt-MnPS3 hybrid structures.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.96.134425