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arXiv · 1712.03175

Helical thermoelectrics and refrigeration

Arjun Mani·Colin Benjamin
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Abstract

The thermoelectric properties of a three terminal quantum spin Hall (QSH) sample are examined. Inherent helicity of the QSH sample helps to generate a large charge power efficiently. Along with charge the system can be designed to work as a highly efficient spin heat engine too. The advantage of a helical over a chiral sample is that, while a multiterminal quantum Hall sample can only work as a quantum heat engine due to broken time reversal(TR) symmetry, a multiterminal QSH system can work effectively both as a charge/spin heat engine as well as a charge/spin refrigerator as TR symmetry is preserved.

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Arjun Mani, Colin Benjamin. 2018-01-30. Helical thermoelectrics and refrigeration. https://doi.org/10.1103/physreve.97.022114

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