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Article: Quantum-classical crossover for biaxial antiferromagnetic particles with a magnetic field along the hard axis

TitleQuantum-classical crossover for biaxial antiferromagnetic particles with a magnetic field along the hard axis
Authors
KeywordsPhysics
Issue Date2004
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2004, v. 70 n. 1, p. 012409-1-012409-4 How to Cite?
AbstractQuantum-classical crossover of the escape rate is studied for biaxial antiferromagnetic particles with a magnetic field along the hard axis. The phase boundary line between first- and second-order transitions is calculated, and the phase diagrams are presented. Comparing with the results of different directed fields, the qualitative behavior of the phase diagram for the magnetic field along the hard axis is different from the case of the field along the medium axis. For the hard axis the phase boundary lines k(y) shift downwards with increasing h, but upwards for the medium axis. It is shown that the magnetic field along the hard axis favors the occurrence of the first-order transition in the range of parameters under the certain constraint condition. The results can be tested experimentally for molecular magnets Fe 8 and Fe 4.
Persistent Identifierhttp://hdl.handle.net/10722/43457
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhou, Ben_HK
dc.contributor.authorTao, Ren_HK
dc.contributor.authorShen, SQen_HK
dc.date.accessioned2007-03-23T04:46:04Z-
dc.date.available2007-03-23T04:46:04Z-
dc.date.issued2004en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2004, v. 70 n. 1, p. 012409-1-012409-4en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43457-
dc.description.abstractQuantum-classical crossover of the escape rate is studied for biaxial antiferromagnetic particles with a magnetic field along the hard axis. The phase boundary line between first- and second-order transitions is calculated, and the phase diagrams are presented. Comparing with the results of different directed fields, the qualitative behavior of the phase diagram for the magnetic field along the hard axis is different from the case of the field along the medium axis. For the hard axis the phase boundary lines k(y) shift downwards with increasing h, but upwards for the medium axis. It is shown that the magnetic field along the hard axis favors the occurrence of the first-order transition in the range of parameters under the certain constraint condition. The results can be tested experimentally for molecular magnets Fe 8 and Fe 4.en_HK
dc.format.extent75935 bytes-
dc.format.extent34304 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.en_HK
dc.subjectPhysicsen_HK
dc.titleQuantum-classical crossover for biaxial antiferromagnetic particles with a magnetic field along the hard axisen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=70&issue=1&spage=012409:1&epage=4&date=2004&atitle=Quantum-classical+crossover+for+biaxial+antiferromagnetic+particles+with+a+magnetic+field+along+the+hard+axisen_HK
dc.identifier.emailShen, SQ: sshen@hkucc.hku.hken_HK
dc.identifier.authorityShen, SQ=rp00775en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.70.012409en_HK
dc.identifier.scopuseid_2-s2.0-42749106946en_HK
dc.identifier.hkuros97394-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-42749106946&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume70en_HK
dc.identifier.issue1en_HK
dc.identifier.spage012409en_HK
dc.identifier.epage1en_HK
dc.identifier.isiWOS:000222996300015-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZhou, B=7401906664en_HK
dc.identifier.scopusauthoridTao, R=7102857052en_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK

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