Acta Physica Sinica

Study of the XY chain with long-range interactions

Jialiang Li, Shuguo Lei, (1)常熟理工学院江苏省新型功能材料重点建设实验室,常熟 215500；常熟理工学院物理与电子科学系，常熟 215500; (2)南京工业大学应用物理系，南京 210009

Published Jan 1, 2008• 1 citation

Abstract

Using the mean-field Jordan-Wigner transformation analysis, we have studied the one-dimensional spin-1/2 XY chain with Z-directional uniform long-range interactions in the external magnetic field. We have obtained such results as the Helmholtz free energy, internal energy, specific heat, magnetization and isothermal susceptibility. We also discuss the first and second-order phase transitions of the system at a finite temperature. Our results agree with results published in literature.

DOI: 10.7498/aps.57.5944

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