Cubic anisotropic magnets with a random field

Cubic anisotropic magnets with a random field

The critical behavior at phase transitions of m-component random magnets with cubic anisotropy is studied within the context of an exactly solvable model. The presence of a random field suppresses any phase transition for spatial dimensions d⩽4. If one or more of the components of the random field a...

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Veröffentlicht in:Journal of applied physics 1999-04, Vol.85 (8), p.6067-6069
Hauptverfasser: Nicolaides, D., Lisyansky, A. A.
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container_title Journal of applied physics
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creator Nicolaides, D.
Lisyansky, A. A.
description The critical behavior at phase transitions of m-component random magnets with cubic anisotropy is studied within the context of an exactly solvable model. The presence of a random field suppresses any phase transition for spatial dimensions d⩽4. If one or more of the components of the random field are zero, but with at least one nonzero component, a new second-order phase transition in the anisotropic phase occurs. In the pure case second-order transitions could happen only into the isotropic phase. The critical temperature of this new, random-field-induced second-order transition decreases with increasing randomness.
doi_str_mv 10.1063/1.369084
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title Cubic anisotropic magnets with a random field
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