Spin transport in a Lindblad-driven isotropic quantum Heisenberg spin-chain

Droenner, Leon; Naumann, Nicolas; Heyl, Markus; Carmele, Alexander

doi:10.1117/12.2252076

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Spin transport in a Lindblad-driven isotropic quantum Heisenberg spin-chain

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Heyl, Markus
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10098/1/Spin-transport-in-a-Lindblad-driven-isotropic-quantum-Heisenberg-spin/10.1117/12.2252076.full?SSO=1
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Citation

Droenner, L., Naumann, N., Heyl, M., & Carmele, A. (2017). Spin transport in a Lindblad-driven isotropic quantum Heisenberg spin-chain. PHYSICS AND SIMULATION OF OPTOELECTRONIC DEVICES XXV, UNSP 100980O. doi:10.1117/12.2252076.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-D051-9

Abstract

We investigate the spin transport properties of an isotropic quantum Heisenberg spin-chain. Driving the system out of equilibrium via two different reservoirs at the boundaries, the system exhibits negative differential conductivity for strong driving. We describe the system-reservoir interaction with a Lindblad approach. We show that the interplay between Lindblad dynamics and system dynamics influences highly the spin current. For weak driving, equal rates maximize the current while strong driving shows a counter intuitive behavior. Our findings could guide to an understanding of the transport properties which are dependent on the external driving.