Giant Peltier Conductivity in an Uncompensated Semimetal Ta2PdSe6

Akitoshi Nakano; Ai Yamakage; Urara Maruoka; Hiroki Taniguchi; Yukio Yasui; Ichiro Terasaki

Giant Peltier Conductivity in an Uncompensated Semimetal Ta2PdSe6

Materials Science 2021-09-07 v1

Authors: Akitoshi Nakano , Ai Yamakage , Urara Maruoka , Hiroki Taniguchi , Yukio Yasui , Ichiro Terasaki

Abstract

Thermoelectric properties of single crystal Ta2PdSe6 is investigated by means of transport measurements, and a density functional calculation. We found a giant Peltier conductivity of 100 Acm-1K-1 at 10 K and successfully explained it by means of conventional semiconductor theory. We concluded that an uncompensated semimetal, high mobility, and heavy effective mass are responsible for the giant Peltier conductivity. Our finding opens a new ground in the field of thermoelectrics to explore much better semimetals for a new possible application such as an electric current generator for a superconducting magnet.

Keywords

peltier conductivity uncompensated semimetal ta2pdse6 thermoelectrics density functional calculation high mobility

Cite

@article{arxiv.2109.02190,
  title  = {Giant Peltier Conductivity in an Uncompensated Semimetal Ta2PdSe6},
  author = {Akitoshi Nakano and Ai Yamakage and Urara Maruoka and Hiroki Taniguchi and Yukio Yasui and Ichiro Terasaki},
  journal= {arXiv preprint arXiv:2109.02190},
  year   = {2021}
}

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25 pages, 10 figures

Giant Peltier Conductivity in an Uncompensated Semimetal Ta2PdSe6

Abstract

Keywords

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