No abstract

The disagreement is stronger for the six-band model. The temperature-and composition-dependence of K near the absorption edge are described better by the two-band than by the six-band model.

The Boltzmann equation is investigated in the presence of strong and time-dependent electromagnetic fields taking into account the intra-collisional field effect. The expression obtained for t h e field-induced tail of the electron-phonon scattering rate leads to the known results for static fields a t low frequencies and includes a t higher frequencies multiphoton processes.Die Boltzmann-Gleichung wird bei Anwesenheit starker zeitabhkngiger elektromagnetischer Felder unter Einbeziehung des "intra-collisional field-effects'' untersucht. Der gewonnene Ausdruck fur den feldinduzierten Auslaufer der StoSzahl infolge Elektron-Phonon-Streuung fiihrt bei tiefen Frequenzen auf die bekannten Resultate fur statische Felder und beriicksichtigt bei hoheren Frequenzen Multiphotonprozesse.