arXiv subjects

Jana Kissova

Publications and source records attributed to Jana Kissova.

2 recordsLinked to original sources

arXiv2010

Phase diagrams of the spin-1/2 Ising-Heisenberg model on a triangle-hexagon lattice

Ground-state and finite-temperature phase diagrams of a geometrically frustrated spin-1/2 Ising-Heisenberg model on a triangle-hexagon lattice are investigated within the generalized star-triangle mapping transformation. It is shown that the ground state is constituted by two different spontaneously long-range ordered phases and one disordered spin-liquid phase.

cond-mat.stat-mech↗

arXiv2007

Specific heat of the mixed spin-1/2 and spin-S Ising model with a rope ladder structure

The mixed spin-1/2 and spin-S (S>1/2) Ising model on a rope ladder is examined by combining two exact analytical methods. By the decoration-iteration mapping transformation, this mixed-spin system is firstly transformed to a simple spin-1/2 Ising model on the two-leg ladder, which is then exactly solved by the standard transfer-matrix method. The thermal variations of the zero-field specific heat are discussed in particular.

cond-mat.stat-mech↗