Description
Chair: J. Petersen
Martin Wolf
(Fritz-Haber-Institute, Dept. of Physical Chemistry, 14195 Berlin, Germany)
05/04/2011, 08:30
Invited talk
The electronic properties of complex materials are often governed by strong electron-phonon coupling and many-body correlation effects leading to phenomena like metal insulator transitions or superconductivity and the formation of broken symmetry ground states. This interplay between electronic and phonon degrees of freedom is of particular importance in thermally or optically driven...
Kai Rossnagel
(University of Kiel)
05/04/2011, 09:10
Talk
Charge-density waves (CDWs) are broken-symmetry states of low-dimensional materials that are brought about by strong electron-phonon interaction. Yet, surprisingly, a clear microscopic understanding beyond this statement has not really evolved for this classical paradigm of condensed matter physics. In quasi-two-dimensional systems, for example, the common approaches based on ARPES band...
Mikhail Lebedev
(ISSP RAS)
05/04/2011, 09:30
Talk
Fully symmetric A1g coherent phonons of bismuth have been investigated in a wide range of pump pulse intensities by the ultrafast pump-probe technique. It has been shown that in the linear regime, implemented only for low pump intensities, the coherent amplitude is proportional to the pump intensity, whereas the relaxation rate of the coherent state and its frequency remain unchanged. In the...
