Experimental proof of the reciprocal relation between spin Peltier and spin Seebeck effects in a bulk YIG/Pt bilayer

Alessandro Sola; Vittorio Basso; Michaela Kuepferling; Carsten Dubs; Massimo Pasquale

doi:10.1038/s41598-019-38687-4

Experimental proof of the reciprocal relation between spin Peltier and spin Seebeck effects in a bulk YIG/Pt bilayer

Sci Rep. 2019 Feb 14;9(1):2047. doi: 10.1038/s41598-019-38687-4.

Authors

Alessandro Sola¹, Vittorio Basso², Michaela Kuepferling², Carsten Dubs³, Massimo Pasquale²

Affiliations

¹ Istituto Nazionale di Ricerca Metrologica, Strada delle Cacce 91, 10135, Torino, Italy. a.sola@inrim.it.
² Istituto Nazionale di Ricerca Metrologica, Strada delle Cacce 91, 10135, Torino, Italy.
³ INNOVENT e.V., Technologieentwicklung, Prüssingstrasse. 27B, 07745, Jena, Germany.

Abstract

We verify for the first time the reciprocal relation between the spin Peltier and spin Seebeck effects in a bulk YIG/Pt bilayer. Both experiments are performed on the same YIG/Pt device by a setup able to accurately determine heat currents and to separate the spin Peltier heat from the Joule heat background. The sample-specific value for the characteristics of both effects measured on the present YIG/Pt bilayer is (6.2 ± 0.4) × 10^-3 KA^-1. In the paper we also discuss the relation of both effects with the intrinsic and extrinsic parameters of YIG and Pt and we envisage possible strategies to optimize spin Peltier refrigeration.