Generation of spin currents by a temperature gradient in a two-terminal device

article Generation of spin currents by a temperature gradient in a two-terminal device published yes Rafael E. Barfknecht author Angela Foerster author Nikolaj T. Zinner author Artem Volosniev author 37D278BC-F248-11E8-B48F-1D18A9856A870000-0003-0393-5525 MiLe department ISTplus - Postdoctoral Fellowships project Theoretical and experimental studies of the interaction between spins and temperature are vital for the development of spin caloritronics, as they dictate the design of future devices. In this work, we propose a two-terminal cold-atom simulator to study that interaction. The proposed quantum simulator consists of strongly interacting atoms that occupy two temperature reservoirs connected by a one-dimensional link. First, we argue that the dynamics in the link can be described using an inhomogeneous Heisenberg spin chain whose couplings are defined by the local temperature. Second, we show the existence of a spin current in a system with a temperature difference by studying the dynamics that follows the spin-flip of an atom in the link. A temperature gradient accelerates the impurity in one direction more than in the other, leading to an overall spin current similar to the spin Seebeck effect. https://research-explorer.ista.ac.at/download/10401/10420/2021_NatComm_Barfknecht.pdf application/pdfno https://creativecommons.org/licenses/by/4.0/ Springer Nature2021 eng Communications Physics 2399-3650 2101.02020 00072286760000210.1038/s42005-021-00753-7 41 Barfknecht, R. E., Foerster, A., Zinner, N. T., & Volosniev, A. (2021). Generation of spin currents by a temperature gradient in a two-terminal device. Communications Physics. Springer Nature. <a href="https://doi.org/10.1038/s42005-021-00753-7">https://doi.org/10.1038/s42005-021-00753-7</a> R. E. Barfknecht, A. Foerster, N. T. Zinner, and A. Volosniev, “Generation of spin currents by a temperature gradient in a two-terminal device,” Communications Physics, vol. 4, no. 1. Springer Nature, 2021. Barfknecht RE, Foerster A, Zinner NT, Volosniev A. 2021. Generation of spin currents by a temperature gradient in a two-terminal device. Communications Physics. 4(1), 252. R.E. Barfknecht, A. Foerster, N.T. Zinner, A. Volosniev, Communications Physics 4 (2021). Barfknecht, Rafael E., Angela Foerster, Nikolaj T. Zinner, and Artem Volosniev. “Generation of Spin Currents by a Temperature Gradient in a Two-Terminal Device.” Communications Physics. Springer Nature, 2021. <a href="https://doi.org/10.1038/s42005-021-00753-7">https://doi.org/10.1038/s42005-021-00753-7</a>. Barfknecht RE, Foerster A, Zinner NT, Volosniev A. Generation of spin currents by a temperature gradient in a two-terminal device. Communications Physics. 2021;4(1). doi:<a href="https://doi.org/10.1038/s42005-021-00753-7">10.1038/s42005-021-00753-7</a> Barfknecht, Rafael E., et al. “Generation of Spin Currents by a Temperature Gradient in a Two-Terminal Device.” Communications Physics, vol. 4, no. 1, 252, Springer Nature, 2021, doi:<a href="https://doi.org/10.1038/s42005-021-00753-7">10.1038/s42005-021-00753-7</a>. 104012021-12-05T23:01:39Z2026-04-02T14:05:00Z