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XY Spin Fluid in an External Magnetic Field

I. P. Omelyan·W. Fenz·I. M. Mryglod·R. Folk
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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.

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I. P. Omelyan, W. Fenz, I. M. Mryglod, R. Folk. 2004-09-28. XY Spin Fluid in an External Magnetic Field. https://doi.org/10.1103/physrevlett.94.045701

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