99 citations · 99 across the 1 of their papers we have counts for
3 papers
cond-mat.str-el2008★ 99 cited
Hierarchical mean-field approach to the - Heisenberg model on a square lattice
L. Isaev, G. Ortiz, J. Dukelsky
We study the quantum phase diagram and excitation spectrum of the frustrated - spin-1/2 Heisenberg Hamiltonian. A hierarchical mean-field approach, at the heart of which…
cond-mat.str-el2003
Structures of Order Parameters in Inhomogeneous Phase States of Strongly Correlated Systems
L. S. Isaev, A. P. Protogenov
The structures of order parameters which determine the bounds of the phase states in the framework of the Ginzburg-Landau model were considered. Using the formulation of t…
cond-mat.str-el2003
Charge Density Distributions in Doped Antiferromagnetic Insulators
L. S. Isaev, A. P. Protogenov
We consider the form of the charge density nano-scale configurations in underdoped states of planar antiferromagnetic insulators in the framework of a soft variant of Faddeev-Niemi…