Article ID Journal Published Year Pages File Type
1540667 Optics Communications 2007 6 Pages PDF
Abstract

Thermal entanglement of the two-qubit XXZ model under magnetic fields in arbitrary directions is studied. Both the uniform and nonuniform fields are addressed. For the ferromagnetic case, a magnetic field perpendicular to the z-axis helps to enhance the entanglement or slows down the decrease of the entanglement. For the antiferromagnetic case, there is the revival phenomenon when the magnetic field is uniform and no such phenomenon when the field is uniform in the z-direction and a staggered type in the x-axis.

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Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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