3 papers
cond-mat.str-el2000
Stripes and superconducting pairing in the t-J model with Coulomb interactions
E. Arrigoni, A. P. Harju, W. Hanke +2
We study the competition between long- and short-range interactions among charge carriers in strongly-correlated electronic systems employing a new method which combines the densit…
cond-mat.str-el1998
Friedel Oscillations in the Open Hubbard Chain
G. Bedürftig, B. Brendel, H. Frahm +1
Using the Density Matrix Renormalization Group (DMRG), we calculate critical exponents for the one-dimensional Hubbard model with open boundary conditions with and without addition…
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…