https://doi.org/10.1140/epjb/s10051-023-00581-4
Regular Article - Solid State and Materials
Elastodynamically induced spin current in a coupled spin-lattice system
1
Department of Physics, Shaoxing University, 312000, Shaoxing, People’s Republic of China
2
Key Laboratory for Advanced Microstructure Materials of the Ministry of Education and Department of Physics, Tongji University, 200092, Shanghai, People’s Republic of China
a
yhyan@fudan.edu.cn
b
zhaoh@fudan.edu.cn
Received:
30
March
2023
Accepted:
9
August
2023
Published online:
18
August
2023
We investigate theoretically the lattice motion-induced DC spin current in a coupled spin-lattice system. The XY spin-Peierls model is adopted to mimic the spin lattice interaction, and then via the Jordan–Wigner transformation the 
spin system is mapped to a fermion one. By using the quadratic response theory, we demonstrate that a DC spin current can be generated by the lattice wave. The dependence of the spin current on the external magnetic field and the properties of the lattice wave has been addressed. Moreover, it is found that the spin current is linearly proportional to the relaxation time, similar to the injection current in electronic systems. The results suggest the potential of lattice dynamics to produce spin currents in magnetic systems.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
