Muon spin relaxation in spin-peierls phase of NaV2O5

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dc.contributor.authorAïn, Men_AU
dc.contributor.authorLord, Jen_AU
dc.contributor.authorJegoudez, Jen_AU
dc.contributor.authorRevcolevschi, Aen_AU
dc.date.accessioned2021-09-06T05:29:34Zen_AU
dc.date.available2021-09-06T05:29:34Zen_AU
dc.date.issued2004-02-04en_AU
dc.date.statistics2021-08-24en_AU
dc.description.abstractGround states of one-dimensional antiferromagnets are topical subjects in regard of their quantum mechanical nature. Spin-Peierls (sP) systems and even-legged ladders systems, have a fundamental non magnetic state which is a singlet. It is separated by a gap, from the triplet magnetic excitations. The sP transition occurs at low temperature (TsP), in several quasi-onedimensional antiferromagnetic compounds which do not undergo a transition to long range magnetic order. Coupling with phonons leads to a crystalline distortion and the chain dimerises. CuGeO3 (TsP = 14.2 K) [1] is the first inorganic sP compound to have been discovered, NaV2O5 which is the subject of the present study, does not appear to be a conventional sP system. The sP transition is accompanied here, by charge ordering, in the sense that above TsP, one electron is orbiting around a V4+ - O2- - V4+ group, then settling on one specific vanadium ion below TsP. Depolarisation of muons have been carried out on NaV2O5, between 6 and 150 K, through the transition at TsP = 33 K. Surprisingly the transition is well fitted throughout to a stretched exponential, exp−[λ (T ).t]β (T ) . While λ rises dramatically below TsP, the exponent β is greater than 1 above TsP but falls to below 1/3 at 6 K as is the case in frustrated systems?en_AU
dc.identifier.citationAïn, M., Lord, J., Jegoudez, J., & Revcolevschi. A. (2004). Muon spin relaxation in spin-peierls phase of NaV2O5. Poster presented to the 28th Annual Condensed Matter and Materials Meeting, Charles Sturt University, Wagga Wagga, 3-6 February 2004. Retrieved from: https://www.physics.org.au/wp-content/uploads/cmm/2004/04handbook.pdfen_AU
dc.identifier.conferenceenddate6 February 2004en_AU
dc.identifier.conferencename28th Annual Condensed Matter and Materials Meetingen_AU
dc.identifier.conferenceplaceWagga Wagga, New South Walesen_AU
dc.identifier.conferencestartdate3 February 2004en_AU
dc.identifier.issn1037-1214en_AU
dc.identifier.otherWP16en_AU
dc.identifier.urihttps://www.physics.org.au/wp-content/uploads/cmm/2004/04handbook.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11600en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Physicsen_AU
dc.subjectMuon spin relaxationen_AU
dc.subjectAntiferromagnetismen_AU
dc.subjectQuantum mechanicsen_AU
dc.subjectTemperature range 0065-0273 Ken_AU
dc.subjectPhononsen_AU
dc.subjectChain reactionsen_AU
dc.subjectOrbitsen_AU
dc.subjectDepolarizationen_AU
dc.titleMuon spin relaxation in spin-peierls phase of NaV2O5en_AU
dc.typeConference Posteren_AU
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