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Proceedings Paper

Spin transport in a Lindblad-driven isotropic quantum Heisenberg spin-chain
Author(s): Leon Droenner; Nicolas Naumann; Markus Heyl; Alexander Carmele
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Paper 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.

Paper Details

Date Published: 22 February 2017
PDF: 8 pages
Proc. SPIE 10098, Physics and Simulation of Optoelectronic Devices XXV, 100980O (22 February 2017); doi: 10.1117/12.2252076
Show Author Affiliations
Leon Droenner, Technical Univ. Berlin (Germany)
Nicolas Naumann, Technical Univ. Berlin (Germany)
Markus Heyl, Max Planck Institute for the Physics of Complex Systems (Germany)
Alexander Carmele, Technical Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 10098:
Physics and Simulation of Optoelectronic Devices XXV
Bernd Witzigmann; Marek Osiński; Yasuhiko Arakawa, Editor(s)

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