3 papers
cond-mat.str-el2001
Peierls-insulator Mott-insulator transition in 1D
H. Fehske, G. Wellein, A. Weiße +3
In an attempt to clarify the nature of the crossover from a Peierls band insulator to a Mott Hubbard insulator, we analyze ground-state and spectral properties of the one-dimension…
cond-mat.str-el1999
Magnetic Order-Disorder Transition in the Two-Dimensional Spatially Anisotropic Heisenberg Model at Zero Temperature
D. Ihle, C. Schindelin, A. Weisse +1
The ground-state properties of the spin-1/2 antiferromagnetic Heisenberg model with spatially anisotropic couplings on a square lattice are investigated by a spin-rotation-invarian…
cond-mat.str-el1998
A new model to describe the physics of VOPO
A. Weisse, G. Bouzerar, H. Fehske
In the past different models for the magnetic salt vanadyl pyrophosphate (VOPO) were discussed. Neither a spin ladder nor an alternating chain are capable to describe recently meas…