Giant Nernst effect and field-enhanced transversal <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>z</mml:mi><mml:mi>N</mml:mi></mml:msub><mml:mi mathvariant="normal">T</mml:mi></mml:math> in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">ZrTe</mml:mi><mml:mn>5</mml:mn></mml:msub></mml:math>

نویسندگان

چکیده

Thermoelectric materials can recover electrical energy from waste heat and vice versa, which are of great significance in green harvesting solid state refrigerator. The thermoelectric figure merit (zT) quantifies the conversion efficiency, a large Seebeck or Nernst effect is crucial for development devices. Here we present significantly thermopower topological semimetal ZrTe5, attributed to both strong Berry curvature bipolar transport. largest in-plane S_xy (when B//b) approaches 1900 {\mu}V/K at T=100K B=13T, out-of-plane S_xz B//c) reaches 5000 {\mu}V/K. As critical part z_N T, linearly increased resistivity \r{ho}_yy regard B induces an almost linear increasing transversal T without saturate under high fields. maximum 0.12 was obtained B=13 T= 120K, surmounts its longitudinal counterpart same condition.

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ژورنال

عنوان ژورنال: Physical review

سال: 2021

ISSN: ['0556-2813', '1538-4497', '1089-490X']

DOI: https://doi.org/10.1103/physrevb.103.045203