Thermal entanglement in a mixed-spin Heisenberg XXZ model under a nonuniform external magnetic field

Autor:	Hailiang Zhang, Honghui Jia, Wang Fei, Xueao Zhang, Shengli Chang
Rok vydání:	2009
Předmět:	Quantum phase transition Thermal entanglement Physics Condensed matter physics Heisenberg model Quantum electrodynamics Quantum entanglement Critical magnetic field Anisotropy Spin (physics) Magnetic field
Zdroj:	Science in China Series G: Physics, Mechanics and Astronomy. 52:1919-1924
ISSN:	1862-2844 1672-1799
DOI:	10.1007/s11433-009-0222-y
Popis:	The thermal entanglement in (1/2,1) mixed-spin Heisenberg XXZ model is investigated under an external nonuniform magnetic field. In the uniform magnetic field system, the critical magnetic field Bc and critical temperature Tc are increased by increasing the anisotropic parameter k. The degree of magnetic field b plays an important role in improving the critical temperature and enlarging the region of entanglement in the nonuniform magnetic field system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c35e2c919c0061d836058bf6849faafb https://doi.org/10.1007/s11433-009-0222-y Zobrazit plný text záznamu