Sola Alessandro, Basso Vittorio, Kuepferling Michaela, Dubs Carsten, Pasquale Massimo
Istituto Nazionale di Ricerca Metrologica, Strada delle Cacce 91, 10135, Torino, Italy.
INNOVENT e.V., Technologieentwicklung, Prüssingstrasse. 27B, 07745, Jena, Germany.
Sci Rep. 2019 Feb 14;9(1):2047. doi: 10.1038/s41598-019-38687-4.
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 KA. 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.
我们首次在块状钇铁石榴石（YIG）/铂（Pt）双层结构中验证了自旋佩尔捷效应和自旋塞贝克效应之间的互易关系。这两个实验均在同一YIG/Pt器件上进行，所采用的装置能够精确测定热流，并将自旋佩尔捷热与焦耳热背景区分开来。在当前的YIG/Pt双层结构上测得的这两种效应特性的样品特定值为(6.2 ± 0.4)×10 KA。在本文中，我们还讨论了这两种效应与YIG和Pt的本征及非本征参数之间的关系，并设想了优化自旋佩尔捷制冷的可能策略。
