A theory of the subgap photoemission in one – dimensional electron – phonon systems. An instanton approach to pseudogaps
Serguei Matveenko 1, Serguei Brazovskii 2 Physical Review B 65 (2002) 245108 For a one-dimensional electron-phonon system we consider the photon absorption involving electronic excitations within the pseudogap energy range. Within the adiabatic approximation for the electron – phonon interactions these processes are described by nonlinear configurations of an instanton type. We calculate intensities of the photoelectron spectroscopy PES […]