Thermoelectric phenomena in disordered open quantum systems

Details Thermoelectric phenomena in disordered open quantum systems Thermoelectric phenomena in disordered open quantum systems

2009-12-07

arxiv.org/abs/0912.1367v2

Phys. Rev. B 81, 193101 (2010)

Physics

Condensed Matter

Disordered Systems and Neural Networks

5 pages, 2 figures, revised version

Scientific paper

Using a stochastic quantum approach, we study thermoelectric transport phenomena at low temperatures in disordered electrical systems connected to external baths. We discuss three different models of one-dimensional disordered electrons, namely the Anderson model of random on-site energies, the random-dimer model and the random-hopping model - also relevant for random-spin models. We find that although the asymptotic behavior of transport in open systems is closely related to that in closed systems for these noninteracting models, the magnitude of thermoelectric transport strongly depends on the boundary conditions and the baths spectral properties. This shows the importance of employing theories of open quantum systems in the study of energy transport.

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