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Influence of anisotropy and magnetic field on thermal entanglement in Heisenberg model

Author(s):
1. Milan Pantić, Univerzitet u Novom Sadu, Prirodno-matematički fakultet, Departman za fiziku, Serbia


Abstract:
We study the thermal entanglement in a two-cubit anisotropic Heisenberg XXZ system with Dzyaloshinskii-Moriya (DM) couplings in a homogenous magnetic field. The effects of these two konds of anisotropies on the thermal entanglement are studied in detail in the concept of concurrence, the measure of entanglement. The analytical expressions of concurence are obtained for this model. It is found that the DM interaction can enhance thermal entanglement and can be efficiently controlled by the DM interaction parameter and ehchange interaction Jz. When D is large enough, the entanglement can exist for larger temperatures and strong magnetic field. Results presented here could be of great importance in futher investigations of similar magnetic systems.

Key words:
Keywords: Thermal entaqnglement,Heisenberg XXZ model,DM interaction

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
06.07.2017.

Conference:
Contemporary Materials 2017 - Savremeni Materijali

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