48 citations · 95 across the 4 of their papers we have counts for
8 papers · 1 filter
Localized polarons and doorway vibrons in finite quantum structures
H. Fehske, G. Wellein, J. Loos +1
We consider transport through finite quantum systems such as quantum barriers, wells, dots or junctions, coupled to local vibrational modes in the quantal regime. As a generic mode…
Optical conductivity of polaronic charge carriers
Jan Loos, Martin Hohenadler, Andreas Alvermann +1
The optical conductivity of charge carriers coupled to quantum phonons is studied in the framework of the one-dimensional spinless Holstein model. For one electron, variational dia…
Phonon spectral function of the Holstein polaron
J Loos, M Hohenadler, A Alvermann +1
The phonon spectral function of the one-dimensional Holstein model is obtained within weak and strong-coupling approximations based on analytical self-energy calculations. The char…
Spectral functions of the spinless Holstein model
J. Loos, M. Hohenadler, H. Fehske
An analytical approach to the one-dimensional spinless Holstein model is proposed, which is valid at finite charge-carrier concentrations. Spectral functions of charge carriers are…
Photoemission spectra of many-polaron systems
M. Hohenadler, D. Neuber, W. von der Linden +3
The cross over from low to high carrier densities in a many-polaron system is studied in the framework of the one-dimensional spinless Holstein model, using unbiased numerical meth…
Mixed-phase description of colossal magnetoresistive manganites
Alexander Weiße, Jan Loos, Holger Fehske
In view of recent experiments, indicating the spatial coexistence of conducting and insulating regions in the ferromagnetic metallic phase of doped manganites, we propose a refined…