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Giant Peltier Conductivity in an Uncompensated Semimetal Ta2PdSe6

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arxiv 2109.02190 v1 pith:LGBTPXGR submitted 2021-09-06 cond-mat.mtrl-sci

Akitoshi Nakano , Ai Yamakage , Urara Maruoka , Hiroki Taniguchi , Yukio Yasui , Ichiro Terasaki This is my paper
classification cond-mat.mtrl-sci
keywords conductivitygiantpeltiermeanssemimetalta2pdse6uncompensatedacm-1k-1
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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.

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