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DY: Fachverband Dynamik und Statistische Physik

DY 6: Statistical Physics far from Thermal Equilibrium - Part II

DY 6.3: Vortrag

Montag, 31. März 2014, 15:45–16:00, ZEU 160

Heat transport through spin chains — •Gernot Schaller¹, Malte Vogl², and Tobias Brandes¹ — ¹Institut für Theoretische Physik, Technische Universität Berlin, Germany — ²Max-Planck-Institut für Physik Komplexer Systeme, Dresden, Germany

Starting from microscopic spin-boson-type models we compare the heat transport through closed and open spin chains with and without disorder. Extending previous work [1] we calculate transport characteristics via locally coupling two heat reservoirs to the spin chain. Since for the closed spin chain many degeneracies are present, we compare results from the full quantum master equation approach with results from the rate equation approach. In both cases we find that transport is strongly dependent on the phase of the spin chain.

[1] M. Vogl, G. Schaller, and T. Brandes, PRL 109, 240402 (2012).