Dresden 2014 – wissenschaftliches Programm
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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).