Magnetism of two-dimensional magnets in the presence of random fields

In low-dimensional magnets, thermal agitation and spatial disorders generate strong spin fluctuations that suppress the long-range magnetic ordering. We develop an analytical equation for the equilibrium magnetization of two-dimensional magnets at finite temperatures in the presence of the random ma...

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Bibliographic Details
Published inarXiv.org
Main Authors Ibrahim, Essa M, Tang, Ping, Zhang, Shufeng
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 06.12.2021
Subjects
Curie temperature
Fields (mathematics)
Magnetic fields
Magnetism
Magnets
Phase transitions
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Summary:In low-dimensional magnets, thermal agitation and spatial disorders generate strong spin fluctuations that suppress the long-range magnetic ordering. We develop an analytical equation for the equilibrium magnetization of two-dimensional magnets at finite temperatures in the presence of the random magnetic field. We find that the random field induces a first-order phase transition in addition to the reduced Curie temperature. The first-order phase transition persists even in the presence of the moderate external magnetic field.
ISSN:2331-8422