Analytical study of thermal entanglement in a two-dimensional J(1)-J(2) model

Eryigit R., Gunduc I., Eryigit R.

PHYSICS LETTERS A, cilt.358, ss.363-367, 2006 (SCI İndekslerine Giren Dergi) identifier identifier


We have investigated the ground-state and the thermal entanglement properties of a two-dimensional frustrated spin 1/2 cluster by calculating the pairwise concurrence and negativity. It is found that an increase in temperature can lead to an enhancement of pairwise entanglement for a certain range of the frustration parameter. We have, also, found that negativity is equal to the half of the concurrence for the model considered here. (c) 2006 Elsevier B.V. All rights reserved.