Acta Physica Sinica

The entanglement in one-dimensional random XY spin chain with Dzyaloshinskii-Moriya interaction

Shan Chuan-Jia, Cheng Wei-Wen, Tang-Kun Liu, Huang Yan-Xia, Hong Li, 湖北师范学院物理系，黄石 435002

Published Jan 1, 2008• 11 citations

Abstract

In this paper, the entanglement in one-dimensional random XY spin system with Dzyaloshinskii-Moriya interaction is investigated, for which the impurities of exchange couplings and the external magnetic fields are considered as random Gaussian distribution variables. By solving the different spin-spin correlation functions and the average magnetization per spin, the concurrence is found. The results show that the Gaussian distribution and Dzyaloshinskii-Moriya interaction have considerable effect on the entanglement near particular locations of the system. Moreover, the entanglement can be controlled and enhanced by varying the distributions of the impurities, the strength of external magnetic field and Dzyaloshinskii-Moriya interaction.

DOI: 10.7498/aps.57.2687

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