Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Electron-phonon quantum kinetics in the strong-coupling regime

Title data

Steinbach, D. ; Kocherscheidt, G. ; Wehner, M. U. ; Kalt, H. ; Wegener, M. ; Ohkawa, K. ; Hommel, D. ; Axt, Vollrath M.:
Electron-phonon quantum kinetics in the strong-coupling regime.
In: Physical Review B. Vol. 60 (1999) Issue 17 . - pp. 12079-12090.
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.60.12079

Project information

Project financing: Deutsche Forschungsgemeinschaft
Krupp-Stiftung

Abstract in another language

The quantum kinetics of optically excited crystal electrons coupled to a bath of dispersionless phonons is studied in the regime of strong electron-phonon coupling. Four wave-mixing experiments on a thin film of bulk ZnSe using 13 fs blue pulses give evidence for corresponding effects that are distinctly different from those found for GaAs which has proven to be a model system for the weak-coupling regime. The experimental results on ZnSe are compared with solutions of a simple model Hamiltonian of electron-phonon interaction suitable for both GaAs and ZnSe. Exact analytic solutions of this model for arbitrary electron-phonon coupling strengths are compared with numerical solutions of the same model following the usual approach in terms of an infinite hierarchy of correlation functions. Virtues and limitations of the simple model Hamiltonian with respect to the experiment are discussed.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Coherent control; Phonon quantum beats; phonons; Control of dephasing; Semiconductors; ultrafast dynamics; generating functions;
strong electron-phonon coupling; Quantum kinetics
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: 17 Oct 2017 10:49
Last Modified: 17 Oct 2017 10:49
URI: https://eref.uni-bayreuth.de/id/eprint/40040