Random-Field Blume-Capel Model: Mean-Field Theory

Miron Kaufman; M. Kanner

doi:10.1103/PhysRevB.42.2378

Random-Field Blume-Capel Model: Mean-Field Theory

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Abstract

The global phase diagram of the Blume-Capel model in a random field obeying the bimodal symmetric distribution is determined by using the mean-field method. The phase diagram includes an isolated ordered critical end point and two lines of tricritical points. A new phase emerges for strong enough random fields: the ferromagnetic-nonmagnetic phase. It is argued that such a phase occurs in three dimensions.

Original language	American English
Journal	Physical Review B
Volume	42
DOIs	https://doi.org/10.1103/PhysRevB.42.2378
State	Published - Aug 1 1990

Disciplines

Physics

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title = "Random-Field Blume-Capel Model: Mean-Field Theory",

abstract = " The global phase diagram of the Blume-Capel model in a random field obeying the bimodal symmetric distribution is determined by using the mean-field method. The phase diagram includes an isolated ordered critical end point and two lines of tricritical points. A new phase emerges for strong enough random fields: the ferromagnetic-nonmagnetic phase. It is argued that such a phase occurs in three dimensions.",

author = "Miron Kaufman and M. Kanner",

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AB - The global phase diagram of the Blume-Capel model in a random field obeying the bimodal symmetric distribution is determined by using the mean-field method. The phase diagram includes an isolated ordered critical end point and two lines of tricritical points. A new phase emerges for strong enough random fields: the ferromagnetic-nonmagnetic phase. It is argued that such a phase occurs in three dimensions.

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JO - Physical Review B

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Random-Field Blume-Capel Model: Mean-Field Theory

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