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cond-mat.str-el1997
Electron transport in coupled chains of interacting fermions with impurities
E. Arrigoni, B. Brendel, W. Hanke
We study the low-temperature transport of a doped two-chain ladder system of interacting fermions in the presence of a barrier or of a low concentration of impurities. Above a cert…
cond-mat.str-el1997
Friedel oscillations induced by non-magnetic impurities in the two-dimensional Hubbard model
W. Ziegler, H. Endres, W. Hanke
We study the interplay of correlations and disorder using an unrestricted Slave-Boson technique in real space. Within the saddle-point approximation, we find Friedel oscillations o…
cond-mat.str-el1997
Pseudogaps and their Interplay with Magnetic Excitations in the doped 2D Hubbard Model
R. Preuss, W. Hanke, C. Gröber +1
On the basis of Quantum Monte Carlo simulations of the two-dimensional Hubbard model which cover the doping range from the under- to the over-doped regime, we find that the single-…