Thermal Hall effect of spins in a paramagnet
Name
PhysRevB.91.125413.pdf
Size
833.47 KB
Format
Adobe PDF
Checksum (MD5)
1890a837e50c161c22c8f5bb742cc093
Author(s)
Lee, Hyunyong
Han, Jung Hoon
Lee, Patrick A.
Date Issued
March 2015
Journal
Physical Review B
Publisher
American Physical Society
Citation
Lee, Hyunyong, Jung Hoon Han, and Patrick A. Lee. “Thermal Hall Effect of Spins in a Paramagnet.” Physical Review B 91.12 (2015). © 2015 American Physical Society
Version
Final published version
Abstract
The theory of Hall transport of spins in a correlated paramagnetic phase is developed. By identifying the thermal Hall current operator in the spin language, which turns out to equal the spin chirality in the pure Heisenberg model, various response functions can be derived straightforwardly. Subsequent reduction to the Schwinger-boson representation of spins allows a convenient calculation of thermal and spin Hall coefficients in the paramagnetic regime using self-consistent mean-field theory. A comparison is made to results from the Holstein-Primakoff reduction of spin operators appropriate for ordered phases.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.91.125413
