Thermal entanglement in spin-dimer V4+ with a magnetic field

Guo Feng Zhang; Jiu Qing Liang

doi:10.1142/S0217979203018235

Thermal entanglement in spin-dimer V⁴⁺ with a magnetic field

Guo Feng Zhang^*
, Jiu Qing Liang

^*Corresponding author for this work

Shanxi University

Research output: Contribution to journal › Article › peer-review

Abstract

By means of the measure of entanglement called "concurrence" we study the entanglement in Heisenberg dimer single molecular magnets V⁴⁺ with a strong magnetic field and find that thermal entanglement exits for both ferromagnetic (FM) and antiferromagnetic (AFM) cases. In FM case entanglement vanishes for anisotropic parameter λ = 0 while in AFM case, entanglement exits in the whole region of anisotropic parameter 0 ≤ λ ≤ 1. Entanglement variations with anisotropic parameter λ, magnetic field B and temperature T are evaluated. We find a critical magnetic field at which the concurrence changes sharply from zero to maximum entanglement.

Original language	English
Pages (from-to)	2129-2136
Number of pages	8
Journal	International Journal of Modern Physics B
Volume	17
Issue number	10
DOIs	https://doi.org/10.1142/S0217979203018235
State	Published - 20 Apr 2003
Externally published	Yes

Keywords

Concurrence
Spin-dimer
Thermal entanglement

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10.1142/S0217979203018235

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abstract = "By means of the measure of entanglement called {"}concurrence{"} we study the entanglement in Heisenberg dimer single molecular magnets V4+ with a strong magnetic field and find that thermal entanglement exits for both ferromagnetic (FM) and antiferromagnetic (AFM) cases. In FM case entanglement vanishes for anisotropic parameter λ = 0 while in AFM case, entanglement exits in the whole region of anisotropic parameter 0 ≤ λ ≤ 1. Entanglement variations with anisotropic parameter λ, magnetic field B and temperature T are evaluated. We find a critical magnetic field at which the concurrence changes sharply from zero to maximum entanglement.",

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AU - Zhang, Guo Feng

AU - Liang, Jiu Qing

PY - 2003/4/20

Y1 - 2003/4/20

N2 - By means of the measure of entanglement called "concurrence" we study the entanglement in Heisenberg dimer single molecular magnets V4+ with a strong magnetic field and find that thermal entanglement exits for both ferromagnetic (FM) and antiferromagnetic (AFM) cases. In FM case entanglement vanishes for anisotropic parameter λ = 0 while in AFM case, entanglement exits in the whole region of anisotropic parameter 0 ≤ λ ≤ 1. Entanglement variations with anisotropic parameter λ, magnetic field B and temperature T are evaluated. We find a critical magnetic field at which the concurrence changes sharply from zero to maximum entanglement.

AB - By means of the measure of entanglement called "concurrence" we study the entanglement in Heisenberg dimer single molecular magnets V4+ with a strong magnetic field and find that thermal entanglement exits for both ferromagnetic (FM) and antiferromagnetic (AFM) cases. In FM case entanglement vanishes for anisotropic parameter λ = 0 while in AFM case, entanglement exits in the whole region of anisotropic parameter 0 ≤ λ ≤ 1. Entanglement variations with anisotropic parameter λ, magnetic field B and temperature T are evaluated. We find a critical magnetic field at which the concurrence changes sharply from zero to maximum entanglement.

KW - Concurrence

KW - Spin-dimer

KW - Thermal entanglement

UR - https://www.scopus.com/pages/publications/0037561502

U2 - 10.1142/S0217979203018235

DO - 10.1142/S0217979203018235

M3 - 文章

AN - SCOPUS:0037561502

SN - 0217-9792

VL - 17

SP - 2129

EP - 2136

JO - International Journal of Modern Physics B

JF - International Journal of Modern Physics B

IS - 10

ER -

Thermal entanglement in spin-dimer V⁴⁺ with a magnetic field

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Keywords

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