Regensburg 2007 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 28: Optical properties

HL 28.2: Talk

Wednesday, March 28, 2007, 14:30–14:45, H14

Quantum kinetic theory of the electron-phonon-interaction in semiconductor intersubband systems — •Stefan Declair, Stefan Butscher, and Anreas Knorr — Institut für Theoretische Physik, Nichtlineare Optik und Quantenelektronik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany

The effect of quantum kinetic (non-Markovian) electron-phonon interaction for semiconductor intersubband transitions is investigated for acoustical and optical phonons. We discuss their influence to line width at low temperature. In this regime, even in weakly coupled systems, we find that electron-phonon interaction can lead to suppression of Coulomb binding effects (1).

(1) S.Butscher and A. Knorr, Phys. Rev. Lett. 97, 197401 (2006).