Transport and Energetic Properties of a Ring of Interacting Spins Coupled to Heat Baths
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We study the heat and spin transport properties in a ring of interacting spins coupled to heat baths at different temperatures. We show that interactions, by inducing avoided crossings, can be a means to tune both the total heat current flowing between the ring and the baths, and the way it flows through the system. In particular, we recognize three regimes in which the heat current flows clockwise, counterclockwise, and in parallel. The temperature bias between the baths also induces a spin current within the ring, whose direction and magnitude can be tuned by the interaction. Lastly, we show how the ergotropy of the nonequilibrium steady state can increase significantly near the avoided crossings.
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Big entropy fluctuations in the nonequilibrium steady state: A simple model with the gauss heat bath
2001 ◽
Vol 92
(1)
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pp. 179-193
2016 ◽
Vol 113
(4)
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pp. 48001
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1999 ◽
Vol 68
(8)
◽
pp. 2810-2816
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2000 ◽
Vol 69
(8)
◽
pp. 2712-2713
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