Nonreciprocal heat transport in the Kitaev chiral spin liquid

Nonreciprocal transport, characterized by its direction-selective nature, holds significant potential for applications in various devices. In this study, we investigate nonreciprocal heat transport in Majorana systems, specifically focusing on the Kitaev chiral spin liquid under external magnetic fi...

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Bibliographic Details
Main Authors Sano, Yoshiki, Takikawa, Daichi, Takahashi, Masahiro O, Yamada, Masahiko G, Mizushima, Takeshi, Fujimoto, Satoshi
Format Journal Article
LanguageEnglish
Published 28.08.2024
Subjects
Physics - Strongly Correlated Electrons
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Summary:Nonreciprocal transport, characterized by its direction-selective nature, holds significant potential for applications in various devices. In this study, we investigate nonreciprocal heat transport in Majorana systems, specifically focusing on the Kitaev chiral spin liquid under external magnetic fields. Our theoretical examination focuses on effects of open boundaries in which the Majorana edge modes exist, and the inversion symmetry is broken, which leads to the Dzyaloshinskii-Moriya interaction (DMI). Through perturbation theory, we demonstrate that DMI induces asymmetric hopping, resulting in the asymmetry of the Majorana band. The results of nonreciprocal heat currents are presented for various directions of external magnetic fields, and we discuss the relation between the current and the field-directions. The potential exists to manipulate both of the directions and magnitude of the non-dissipative current by varying external magnetic fields and apply to non-dissipative heat transfer devices.
DOI:10.48550/arxiv.2408.15564