Regensburg 2010 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 46: Quantum Dots and Wires: Transport
HL 46.10: Vortrag
Mittwoch, 24. März 2010, 16:30–16:45, H17
A Single-Electron-Transistor with current gain — Armin C. Welker1 and •Jürgen Weis2 — 1Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig — 2Max-Planck-Institut für Festkörperforschung, Heisenbergtraße 1, 70569 Stuttgart
Quantum-dot systems are model systems for single-molecule experiments. Here, a new application of a quantum-dot system in electrical transport measurements is presented. The model system, a quantum dot with three leads, is used as a new type of current-gain transistor by using excited states of electron systems inside the quantum dot. We are able to prove experimentally and theoretically for certain cases that with each single-electron exchange with the base lead in fact more than one single-electron transfer is possible from source to drain (current gain).