Thermal Entanglement of a Two-Qubit XXZ Heisenberg Chain with Dzialoshinski–Moriya Interaction

Abstract

The effect of Dzialoshinski–Moriya (DM) interaction on thermal entanglement of a two-qubit XXZ spin chain in a homogenous magnetic field is investigated. It is found that the DM interaction can enhance thermal entanglement. When D is large enough, the entanglement can exist for larger temperatures and strong magnetic field.