Phase diagrams of the transverse Ising antiferromagnet in the presence of the longitudinal magnetic field

作者：Neto Minos A^*; Ricardo de Sousa J

来源：Physica A: Statistical Mechanics and Its Applications , 2013, 392(1): 1-6.

DOI：10.1016/j.physa.2012.07.073

• Effective-field theory
• Transverse field
• Ising antiferromagnet

In this paper we study the critical behavior of the two-dimensional antiferromagnetic Ising model in both uniform longitudinal (H) and transverse (Omega) magnetic fields. Using the effective-field theory (EFT) with correlation in single site clusters we calculate the phase diagrams in the H - T and Omega - T planes for the square lattice. We have only found second order phase transitions for all values of fields and reentrant behavior was not observed.

• 出版日期2013-1-1