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Ising metamagnets in thin film geometry: Equilibrium properties

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dc.contributorVirginia Techen
dc.contributor.authorChou, Y. L.en
dc.contributor.authorPleimling, Michel J.en
dc.contributor.departmentPhysicsen
dc.date.accessed2013-12-18en
dc.date.accessioned2014-02-11T13:45:58Zen
dc.date.available2014-02-11T13:45:58Zen
dc.date.issued2011-10-17en
dc.description.abstractArtificial antiferromagnets and synthetic metamagnets have attracted much attention recently due to their potential for many different applications. Under some simplifying assumptions, these systems can be modeled by thin Ising metamagnetic films. In this paper we study, using both the Wang-Landau scheme and importance sampling Monte Carlo simulations, the equilibrium properties of these films. On the one hand, we discuss the microcanonical density of states and its prominent features. On the other hand, we analyze canonically various global and layer quantities. We obtain the phase diagram of thin Ising metamagnets as a function of temperature and external magnetic field. Whereas the phase diagram of the bulk system exhibits only one phase transition between the antiferromagnetic and paramagnetic phases, the phase diagram of thin Ising metamagnets includes an additional intermediate phase where one of the surface layers has aligned itself with the direction of the applied magnetic field. This additional phase transition is discontinuous and ends in a critical end point. Consequently, it is possible to gradually go from the antiferromagnetic phase to the intermediate phase without passing through a phase transition.en
dc.description.sponsorshipUS National Science Foundation_DMR-0904999en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationChou, Yen-Liang ; Pleimling, Michel, Oct 17, 2011. "Ising metamagnets in thin film geometry: Equilibrium properties," PHYSICAL REVIEW B 84(13): 134422. DOI: 10.1103/PhysRevB.84.134422en
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.84.134422en
dc.identifier.issn1098-0121en
dc.identifier.urihttp://hdl.handle.net/10919/25385en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevB.84.134422en
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectmonte-carloen
dc.subjecttricritical behavioren
dc.subjectsmall systemsen
dc.subjectperpendicularen
dc.subjectanisotropyen
dc.subjectmagnetization reversalen
dc.subjectdimensional crossoveren
dc.subjectphase-transitionsen
dc.subjecteffective-fielden
dc.subjectfebr2en
dc.subjectmodelen
dc.subjectPhysicsen
dc.titleIsing metamagnets in thin film geometry: Equilibrium propertiesen
dc.title.serialPhysical Review Ben
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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