XY Spin Fluid in an External Magnetic Field
arXiv:cond-mat/0409715 · doi:10.1103/PhysRevLett.94.045701
Abstract
A method of integral equations is developed to study inhomogeneous fluids with planar spins in an external field. As a result, the calculations for these systems appear to be no more difficult than those for ordinary homogeneous liquids. The approach proposed is applied to the ferromagnetic XY spin fluid in a magnetic field using a soft mean spherical closure and the Born-Green-Yvon equation. This provides an accurate reproduction of the complicated phase diagram behavior obtained by cumbersome Gibbs ensemble simulation and multiple histogram reweighting techniques.
4 pages, 3 figures, submitted to Phys. Rev. Lett