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HL: Halbleiterphysik

HL 7: Transporteigenschaften

HL 7.5: Vortrag

Freitag, 4. März 2005, 11:45–12:00, TU P-N226

Admitances of quantum MIS (metal-insulator-semiconductor)-type structures — •Paul Racec^1,2 and Ulrich Wulf^3,1 — ¹IHP/BTU Joint Lab, Postfach 101344, 03013 Cottbus, Germany — ²National Institute of Materials Physics, PO Box MG-7, 077125 Bucharest Magurele, Romania — ³Brandenburgische Technische Universität Cottbus, Fakultät 1, Postfach 101344, 03013 Cottbus, Germany

We perform calculations of the charge-charge corelation function in open quantum nanostructures in the frame of random phase approximation. We use single particle wave-functions obtained in a separate static Hartee calculations. Full quantum-mechanical expressions for admitances of MIS (metal-insulator-semiconductor)-type nanostructures are given. The turnover frequency in the capacitance is associated with the life-time of a quasi-bound state. Qualitative comparison with experimental data is also provided.