Electron-phonon quantum kinetics for spatially inhomogeneous excitations

M. Herbst, M. Glanemann, V. M. Axt, and T. Kuhn
Phys. Rev. B 67, 195305 – Published 6 May 2003
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Abstract

The dynamics of optically generated carriers interacting with longitudinal optical phonons in spatially inhomogeneous systems is analyzed on a quantum kinetic level. A microscopic density-matrix theory is formulated accounting for arbitrary spatial inhomogeneities in the semiconductor structure and the excitation conditions. The physical origin of the various contributions entering the dynamical equations is discussed. The theory is applied to the dynamics of a wave packet optically generated locally in a quantum wire. We study quantum kinetic features due to the interaction with phonons in the expansion process both in a one-band and a two-band model as well as the generation and dynamics of coherent phonon amplitudes.

  • Received 12 November 2002

DOI:https://doi.org/10.1103/PhysRevB.67.195305

©2003 American Physical Society

Authors & Affiliations

M. Herbst, M. Glanemann, V. M. Axt, and T. Kuhn

  • Institut für Festkörpertheorie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Str. 10, D-48149 Münster, Germany

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Issue

Vol. 67, Iss. 19 — 15 May 2003

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