XY spin fluid in an external magnetic field |
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Authors: | Omelyan I P Fenz W Mryglod I M Folk R |
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Institution: | Institute for Condensed Matter Physics, 1 Svientsitskii Street, UA-79011 Lviv, Ukraine. |
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Abstract: | A method of integral equations is developed to study anisotropic 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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