29 citations · 52 across the 4 of their papers we have counts for
6 papers · 1 filter
Quantum Criticality in Dimerized Spin Ladders
Gennady Y. Chitov, Brandon W. Ramakko, Mohamed Azzouz
We analyze a possibility of quantum criticality (gaplessness) in dimerized antiferromagnetic two- and three-leg spin-1/2 ladders. Contrary to earlier studies of these models, we ex…
Spin-Peierls instability in the three-leg Heisenberg ladder
Mohamed Azzouz, Khalada Shahin, Gennady Y. Chitov
Because the three-leg ladder behaves like a renormalized single Heisenberg chain we argue that a spin-Peierls instability must occur in this system when it is coupled to three-dime…
On the Stacking Charge Order in NaV2O5
G. Y. Chitov, C. Gros
We propose a mechanism for the observed stacking charge order in the quarter-filled ladder compound NaV2O5. Via a standard mapping of the charge degrees of freedom onto Ising spins…
The Spin-SAF transition in NaV2O5 induced by spin-pseudospin coupling
Claudius Gros, Gennady Y. Chitov
We present microscopic estimates for the spin-spin and spin-speudospin interactions of the quarter-filled ladder compound NaV2O5, obtained by exactly diagonalizing appropriate clus…
Simultaneous Charge Ordering and Spin Dimerization in Quasi-Two-Dimensional Quarter-Filled Ladders
G. Y. Chitov, C. Gros
We study the spin-pseudospin Hamiltonian of the Ising Model in Transverse Field (IMTF) for pseudospins, coupled to the XY-spins on a triangular lattice. This model appears from ana…
Wilson-Kadanoff Renormalization Group in Higher Orders: One-Dimensional g-ology Model as an Example
G. Y. Chitov, C. Bourbonnais
We apply the standard Wilson-Kadanoff (WK) momentum-space Renormalization Group (RG) scheme for the g-ology model of one-dimensional fermions. By explicitly carrying out calculatio…