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Electron-phonon quantum kinetics for spatially inhomogeneous excitations

Title data

Herbst, M. ; Glanemann, Markus ; Axt, Vollrath M. ; Kuhn, Tilmann:
Electron-phonon quantum kinetics for spatially inhomogeneous excitations.
In: Physical Review B. Vol. 67 (2003) Issue 19 . - No. 195305, 18 Seiten.
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.67.195305

Project information

Project financing: Deutsche Forschungsgemeinschaft
Graduiertenkolleg Nichtlineare kontinuierliche Systeme and European Commission TMR network Ultrafast Quantum Optoelectronics.

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: spatio-temporal evolution; quantum kinetics; LO phonons; Ultrafast phenomena; Ultrafast processes in condensed matter; semiconductors
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 23 Oct 2017 08:28
Last Modified: 23 Oct 2017 08:28
URI: https://eref.uni-bayreuth.de/id/eprint/40104