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Understanding Reentrance in Frustrated Magnets: the Case of the Er2Sn2O7 Pyrochlore

hal.structure.identifierColorado State University [Fort Collins] [CSU]
dc.contributor.authorYAHNE, D. R.
hal.structure.identifierUniversity of Waterloo [Waterloo]
dc.contributor.authorPEREIRA, D.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorJAUBERT, L.D.C.
hal.structure.identifierThe University of Tennessee [Knoxville]
dc.contributor.authorSANJEEWA, L. D.
hal.structure.identifierClemson University
dc.contributor.authorPOWELL, M.
hal.structure.identifierClemson University
dc.contributor.authorKOLIS, J. W.
hal.structure.identifierNational Institute of Standards and Technology [Gaithersburg] [NIST]
dc.contributor.authorXU, Guangyong
hal.structure.identifierSouthern Connecticut State University
dc.contributor.authorENJALRAN, M.
hal.structure.identifierUniversity of Waterloo [Waterloo]
hal.structure.identifierCanadian Institute for Advanced Research [CIFAR]
dc.contributor.authorGINGRAS, M. J. P.
hal.structure.identifierColorado State University [Fort Collins] [CSU]
hal.structure.identifierCanadian Institute for Advanced Research [CIFAR]
dc.contributor.authorROSS, K. A.
dc.date.created2021-12-30
dc.date.issued2021-12-30
dc.identifier.issn0031-9007
dc.description.abstractEnReentrance, the return of a system from an ordered phase to a previously encountered less-ordered one as a controlled parameter is continuously varied, is a recurring theme found in disparate physical systems, yet its microscopic cause is often not investigated thoroughly. Here, through detailed characterization and theoretical modeling, we uncover the microscopic mechanism behind reentrance in the strongly frustrated pyrochlore antiferromagnet Er2Sn2O7. We use single crystal heat capacity measurements to expose that Er2Sn2O7 exhibits multiple instances of reentrance in its magnetic field B vs temperature T phase diagram for magnetic fields along three cubic high symmetry directions. Through classical Monte Carlo simulations, mean field theory, and classical linear spin-wave expansions, we argue that the origins of the multiple occurrences of reentrance observed in Er2Sn2O7 are linked to soft modes. These soft modes arise from phase competition and enhance thermal fluctuations that entropically stabilize a specific ordered phase, resulting in an increased transition temperature for certain field values and thus the reentrant behavior. Our work represents a detailed examination into the mechanisms responsible for reentrance in a frustrated magnet and may serve as a template for the interpretation of reentrant phenomena in other physical systems.
dc.description.sponsorshipDesign de la frustration: effets de surface et désordre - ANR-18-CE30-0011
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enUnderstanding Reentrance in Frustrated Magnets: the Case of the Er2Sn2O7 Pyrochlore
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevLett.127.277206
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Mécanique statistique [cond-mat.stat-mech]
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Electrons fortement corrélés [cond-mat.str-el]
dc.identifier.arxiv2101.08361
bordeaux.journalPhysical Review Letters
bordeaux.page277206
bordeaux.volume127
bordeaux.peerReviewedoui
hal.identifierhal-03118810
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03118810v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Review%20Letters&rft.date=2021-12-30&rft.volume=127&rft.spage=277206&rft.epage=277206&rft.eissn=0031-9007&rft.issn=0031-9007&rft.au=YAHNE,%20D.%20R.&PEREIRA,%20D.&JAUBERT,%20L.D.C.&SANJEEWA,%20L.%20D.&POWELL,%20M.&rft.genre=article


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