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cond-mat2001
Numerical study of quantum percolation
A. Weiße, H. Fehske
We study the density of states and the optical conductivity of the classical double-exchange model on a site percolated cluster.
cond-mat.str-el2001
Competition of Zener and polaron phases in doped CMR manganites
A. Weisse, J. Loos, H. Fehske
Inspired by the strong experimental evidence for the coexistence of localized and itinerant charge carriers close to the metal-insulator transition in the ferromagnetic phase of co…
cond-mat.str-el2001
Considerations on the quantum double-exchange Hamiltonian
A. Weisse, J. Loos, H. Fehske
Schwinger bosons allow for an advantageous representation of quantum double-exchange. We review this subject, comment on previous results, and address the transition to the semicla…