2008/08/31 by Lifa Zhang, Jian‐Sheng Wang, Jian-Sheng Wang +1
Engineering · Materials Science · Physics and Astronomy · #Quantum and electron transport phenomena #Thermal Radiation and Cooling Technologies #Thermal properties of materials #cond-mat.other #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevb.78.144416
published as Phys. Rev. B. 78. 144416 (2008) · 6 pages, 7 figures
openalex publication_date 2008/10/15 · arxiv created 2008/10/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study ballistic thermal transport in Heisenberg spin chain with nearest-neighbor ferromagnetic interactions at low temperatures. Explicit expressions for transmission coefficients are derived for thermal transport in a periodic spin chain of arbitrary junction length by a spin-wave model. Our analytical results agree very well with the ones from nonequilibrium Green's function method. Our study shows that the transmission coefficient oscillates with the frequency of thermal wave. Moreover, the thermal transmission shows strong dependence on the intrachain coupling, the length of the spin chain, and the external magnetic field. The results demonstrate the possibility of manipulating spin-wave propagation and magnetothermal conductance in the spin-chain junction by adjusting the intrachain coupling and/or the external magnetic field.