72 citations · 144 across the 3 of their papers we have counts for
3 papers
cond-mat.str-el2006★ 49 cited
Mott transition and dimerization in the one-dimensional SU Hubbard model
K. Buchta, Ö. Legeza, E. Szirmai +1
The one-dimensional SU Hubbard model is investigated numerically for , and 5 at half filling and filling using the density-matrix renormalization-group (DMRG) m…
cond-mat.str-el2005★ 23 cited
Unified phase diagram of models exhibiting neutral-ionic transition
Ö. Legeza, K. Buchta, J. Sólyom
We have studied the neutral-ionic transition in organic mixed-stack compounds. A unified model has been derived which, in limiting cases, is equivalent to the models proposed earli…
cond-mat.str-el2005★ 72 cited
Probable absence of a quadrupolar spin-nematic phase in the bilinear-biquadratic spin-1 chain
K. Buchta, G. Fáth, Ö. Legeza +1
We study numerically the ground-state phase diagram of the bilinear-biquadratic spin-1 chain near the ferromagnetic instability point, where the existence of a gapped or gapless no…