Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2008-08-01

Journal: Maurice Jacob Memorial Meeting

Included Journals: CPCI-S、SCIE

Volume: 78

Issue: 2

ISSN: 0031-8949

Abstract: We investigate the entanglement property of a two-qubit, mixed-spin, Heisenberg system under a nonuniform magnetic field. We show that increasing b can improve the threshold temperature, and can also make the entanglement enhanced. It is very interesting to note that the joining of the nonuniform magnetic field b can not only induce the entanglement for the ferromagnetic case, but can also make the entanglement symmetrical in terms of J for a larger value of b, while the uniform field B cannot do this. We also analyze the ground-state entanglement features in detail.