Berlin 2015 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 24: Thermoelectricity

HL 24.9: Vortrag

Dienstag, 17. März 2015, 11:45–12:00, EW 202

Thermoelectrics of mesoscopic transport influenced by an electromagnetic environment — •Michael Mecklenburg, Björn Kubala, and Joachim Ankerhold — University Ulm, Institut for Complex Quantum Systems (ICQ), Albert-Einstein-Allee 11, D-89069 Ulm, Germany

Mesoscopic systems have been considered as interesting candidates for thermoelectric applications. This is due to strong energy-dependent transport features, as shown, for instance, in resonant tunneling through a quantum dot. Transport through such a quantum system is also influenced by the electromagnetic properties of the circuit into which it is embedded. Such effects on thermoelectric properties have, so far, received only scant attention [1].
Here, we apply P(E)-theory to investigate the impact of different types of electromagnetic environment on the thermopower. Introducing a strong asymmetry into the system allows for a controlled tuning of the effective temperature bias. Extensions beyond the single-dot case considered here are possible.
[1] T. Ruokola und T. Ojanen, Phys. Rev. B, 86 (2012), 035454.