Spin-Nernst effect in the paramagnetic regime of an antiferromagnetic insulator
- Carnegie Mellon Univ., Pittsburgh, PA (United States). Department of Physics
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
In this study, we theoretically investigate a pure spin Hall current driven by a longitudinal temperature gradient, i.e., the spin Nernst effect (SNE), in a paramagnetic state of a collinear antiferromagnetic insulator with the Dzyaloshinskii-Moriya interaction. The SNE in a magnetic ordered state in such an insulator was proposed by Cheng et al. [R. Cheng, S. Okamoto, and D. Xiao, Phys. Rev. Lett. 117, 217202 (2016)]. Here we show that the Dzyaloshinskii-Moriya interaction can generate a pure spin Hall current even without magnetic ordering. By using a Schwinger boson mean-field theory, we calculate the temperature dependence of SNE in a disordered phase. Lastly, we also discuss the implication of our results to experimental realizations.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
- Grant/Contract Number:
- AC05-00OR22725; SC0012509
- OSTI ID:
- 1474614
- Alternate ID(s):
- OSTI ID: 1460909
- Journal Information:
- Physical Review B, Vol. 98, Issue 3; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Magnonic Floquet Quantum Spin Hall Insulator in Bilayer Collinear Antiferromagnets
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journal | May 2019 |
Magnonic analog of the Edelstein effect in antiferromagnetic insulators
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journal | January 2020 |
Thermal Hall Effect Induced by Magnon-Phonon Interactions | text | January 2019 |
Magnonic Analogue of Edelstein Effect in Antiferromagnetic Insulators | text | January 2019 |
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