64 citations · 123 across the 2 of their papers we have counts for
4 papers
Topological Order, Dimerization, and Spinon Deconfinement in Frustrated Spin Ladders
Eugene H. Kim, Ö. Legeza, J. Sólyom
We consider topological order and dimer order in several frustrated spin ladder models, which are related to higher dimensional models of current interest; we also address the occu…
Entropic analysis of quantum phase transitions from uniform to spatially inhomogeneous phases
Ö. Legeza, J. Sólyom, L. Tincani +1
We propose a new approach to study quantum phase transitions in low-dimensional fermionic or spin models that go from uniform to spatially inhomogeneous phases such as dimerized, t…
Two-site entropy and quantum phase transitions in low-dimensional models
Ö. Legeza, J. Sólyom
We propose a new approach to study quantum phase transitions in low-dimensional lattice models. It is based on studying the von Neumann entropy of two neighboring central sites in…
String order in spin liquid phases of spin ladders
G. Fath, O. Legeza, J. Solyom
Two-leg spin ladders have a rich phase diagram if rung, diagonal and plaquette couplings are allowed for. Among the possible phases there are two Haldane-type spin liquid phases wi…