BiSb and spin-related thermoelectric phenomena

Joseph P. Heremans; Hyungyu Jin; Yuanhua Zheng; Sarah J. Watzman; Arati Prakash

doi:10.1117/12.2228758

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17 May 2016 BiSb and spin-related thermoelectric phenomena

Joseph P. Heremans, Hyungyu Jin, Yuanhua Zheng, Sarah J. Watzman, Arati Prakash

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Proceedings Volume 9821, Tri-Technology Device Refrigeration (TTDR); 98210I (2016) https://doi.org/10.1117/12.2228758
Event: SPIE Defense + Security, 2016, Baltimore, Maryland, United States

Abstract

This article reviews the factors limiting the figure of merit zT of conventional thermoelectrics especially at cryogenic temperatures and then highlights modern approaches used to increase zT below 200 K. Two type of materials are discussed. The first are BiSb alloys, relatively conventional thermoelectrics in which the zT is enhanced by using resonant levels. The second is the spin- Seebeck effect (SSE), a new solid-state energy conversion technology. Classical thermoelectric and SSE physics are combined to provide new concepts, like magnon-drag, in which we hope to increase the performance of solid-state coolers by exploiting the spin degree of freedom.

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Joseph P. Heremans, Hyungyu Jin, Yuanhua Zheng, Sarah J. Watzman, and Arati Prakash "BiSb and spin-related thermoelectric phenomena", Proc. SPIE 9821, Tri-Technology Device Refrigeration (TTDR), 98210I (17 May 2016); https://doi.org/10.1117/12.2228758

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