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cond-mat1997★ 70 cited
Spectral properties of the 2D Holstein polaron
H. Fehske, J. Loos, G. Wellein
The two-dimensional Holstein model is studied by means of direct Lanczos diagonalization preserving the full dynamics and quantum nature of phonons. We present numerical exact resu…
cond-mat1997★ 2 cited
Effective one-band electron-phonon Hamiltonian for nickel perovskites
J. Loos, H. Fehske
Inspired by recent experiments on the Sr-doped nickelates, , we propose a minimal microscopic model capable to describe the variety of the observed quasi-static…