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Article: Suppression of quantum phase interference in the molecular magnet Fe8 with dipolar-dipolar interaction

TitleSuppression of quantum phase interference in the molecular magnet Fe8 with dipolar-dipolar interaction
Authors
KeywordsPhysics
Issue Date2002
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2002, v. 66 n. 9, p. 924011-924014 How to Cite?
AbstractRenormalized tunnel splitting with a finite distribution in the biaxial spin model for molecular magnets is obtained by taking into account the dipolar interaction of enviromental spins. Oscillation of the resonant tunnel splitting with a transverse magnetic field along the hard axis is smeared by the finite distribution, which subsequently affects the quantum steps of the hysteresis curve evaluated in terms of the modified Landau-Zener model of spin flipping induced by the sweeping field. We conclude that the dipolar-dipolar interaction drives decoherence of quantum tunneling in the molecular magnet Fe8, which explains why the quenching points of tunnel splitting between odd and even resonant tunneling predicted theoretically were not observed experimentally.
Persistent Identifierhttp://hdl.handle.net/10722/43360
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, ZDen_HK
dc.contributor.authorLiang, JQen_HK
dc.contributor.authorShen, SQen_HK
dc.date.accessioned2007-03-23T04:44:16Z-
dc.date.available2007-03-23T04:44:16Z-
dc.date.issued2002en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2002, v. 66 n. 9, p. 924011-924014en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43360-
dc.description.abstractRenormalized tunnel splitting with a finite distribution in the biaxial spin model for molecular magnets is obtained by taking into account the dipolar interaction of enviromental spins. Oscillation of the resonant tunnel splitting with a transverse magnetic field along the hard axis is smeared by the finite distribution, which subsequently affects the quantum steps of the hysteresis curve evaluated in terms of the modified Landau-Zener model of spin flipping induced by the sweeping field. We conclude that the dipolar-dipolar interaction drives decoherence of quantum tunneling in the molecular magnet Fe8, which explains why the quenching points of tunnel splitting between odd and even resonant tunneling predicted theoretically were not observed experimentally.en_HK
dc.format.extent74969 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.titleSuppression of quantum phase interference in the molecular magnet Fe8 with dipolar-dipolar interactionen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=66&issue=9&spage=092401:1&epage=4&date=2002&atitle=Suppression+of+quantum+phase+interference+in+the+molecular+magnet+Fe8+with+dipolar-dipolar+interactionen_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.66.092401en_HK
dc.identifier.scopuseid_2-s2.0-0036752444en_HK
dc.identifier.hkuros74831-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036752444&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume66en_HK
dc.identifier.issue9en_HK
dc.identifier.spage924011en_HK
dc.identifier.epage924014en_HK
dc.identifier.isiWOS:000178383200015-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridChen, ZD=7409486778en_HK
dc.identifier.scopusauthoridLiang, JQ=7404541370en_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK

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