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TT: Fachverband Tiefe Temperaturen

TT 2: Transport: Nanoelectronics I - Quantum Dots and Wires, Point Contacts 1

TT 2.5: Vortrag

Montag, 23. März 2009, 11:15–11:30, HSZ 301

Interaction-induced harmonic frequency mixing in quantum dots — •Michael Thorwart¹, Reinhold Egger², and Alexander O. Gogolin³ — ¹FRIAS, Universität Freiburg — ²Universität Düsseldorf — ³Imperial College London

We show [1] that harmonic frequency mixing in quantum dots coupled to two leads under the influence of time-dependent voltages of different frequency is dominated by interaction effects. This offers a unique and direct spectroscopic tool to access correlations, and holds promise for efficient frequency mixing in nano-devices. Explicit results are provided for an Anderson dot and for a molecular level with phonon-mediated interactions.

[1] M. Thorwart, R. Egger, and A.O. Gogolin, Phys. Rev. Lett. 101, 036806 (2008)