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dc.contributor.authorKaufmann, B. A.en_US
dc.contributor.authorSchwabl, F.en_US
dc.contributor.authorTäuber, Uwe C.en_US
dc.date.accessioned2016-09-30T00:28:36Z
dc.date.available2016-09-30T00:28:36Z
dc.date.issued1999-05-01en_US
dc.identifier.issn1098-0121en_US
dc.identifier.urihttp://hdl.handle.net/10919/73091
dc.description.abstractWe study the critical dynamics of crystals which undergo a second-order phase transition from a high-temperature normal phase to a structurally incommensurate (IC) modulated phase. We give a comprehensive description of the critical dynamics of such systems, e.g. valid for crystals of the A2BX4 family. Using an extended renormalization scheme, we present a framework in which we analyze the phases above and below the critical temperature TI . Above TI , the crossover from the critical behavior to the mean-field regime is studied. Specifically, the resulting width of the critical region is investigated. In the IC modulated phase, we consider explicitly the coupling of the order parameter modes to one-loop order. Here the Goldstone anomalies and their effect on measurable quantities are investigated. We show their relation with the postulated phason gap. While the theory can be applied to a variety of experiments, we concentrate on quadrupole-perturbed nuclear magnetic resonance (NMR) experiments. We find excellent agreement with these dynamical measurements and provide answers for some questions that arose from recent results.en
dc.format.extent11226 - 11243 (18) page(s)en_US
dc.languageEnglishen_US
dc.publisherAmer Physical Socen_US
dc.relation.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000084631900033&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1en_US
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectPhysics, Condensed Matteren_US
dc.subjectPhysicsen_US
dc.subjectPHYSICS, CONDENSED MATTERen_US
dc.subjectSPIN-LATTICE RELAXATIONen_US
dc.subjectQUADRUPOLAR PERTURBED NMRen_US
dc.subjectMINIMAL RENORMALIZATIONen_US
dc.subjectEPSILON-EXPANSIONen_US
dc.subjectCRITICAL-BEHAVIORen_US
dc.subjectGOLDSTONE MODESen_US
dc.subjectSYSTEMSen_US
dc.subjectCOEXISTENCEen_US
dc.subjectFERROMAGNETSen_US
dc.subjectATTENUATIONen_US
dc.titleCritical dynamics at incommensurate phase transitions and NMR relaxation experimentsen_US
dc.typeArticle - Refereed
dc.contributor.departmentPhysicsen_US
dc.description.notesPublished (Publication status)en_US
dc.title.serialPHYSICAL REVIEW Ben_US
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.59.11226
dc.identifier.volume59en_US
dc.identifier.issue17en_US
pubs.organisational-group/Virginia Tech
pubs.organisational-group/Virginia Tech/All T&R Faculty
pubs.organisational-group/Virginia Tech/Science
pubs.organisational-group/Virginia Tech/Science/COS T&R Faculty
pubs.organisational-group/Virginia Tech/Science/Physics


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