Journal
PHYSICAL REVIEW B
Volume 80, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.172301
Keywords
Heisenberg model; magnetic anisotropy; magnetic fields; quantum theory; rectification; thermal conductivity
Funding
- Ministry of Education of Republic of Singapore [R-144-000-203-112, R-144-000-173-112/101]
- NSF of China
- MOE of China [B06011]
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We study thermal transport in anisotropic Heisenberg spin chains using the quantum master equation. It is found that thermal rectification changes sign when the external homogeneous magnetic field is varied. This reversal also occurs when the magnetic field becomes inhomogeneous. Moreover, we can tune the reversal of rectification by temperatures of the heat baths, the anisotropy, and size of the spin chains.
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