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TT: Fachverband Tiefe Temperaturen

TT 58: Transport: Poster Session

TT 58.6: Poster

Wednesday, March 9, 2016, 15:00–18:30, Poster D

Thermopower signatures and spectroscopy of the canyon of conductance suppression — •Gediminas Kiršanskas, Susanna Hammarberg, Olov Karlström, and Andreas Wacker — Mathematical Physics and NanoLund, Lund University, Box 118, S-22100 Lund, Sweden

Interference effects in quantum dots between different transport channels can lead to a strong suppression of conductance, which cuts like a canyon through the common conductance plot [1]. We consider the thermoelectric transport properties of this canyon of conductance suppression using the second-order von Neumann approach. We observe a characteristic signal for the zeros of the thermopower. This demonstrates that thermoelectric measurements are an interesting complimentary tool to study complex phenomena for transport through confined systems.
H. A. Nilsson et al., PRL 104, 186804 (2010)