Muon spin rotation investigation of the S = 1/2 triangular lattice LiNiO2
| hal.structure.identifier | Institut Laue-Langevin [ILL] | |
| dc.contributor.author | CHATTERJI, Tapan | |
| hal.structure.identifier | Laboratory for Neutron Scattering and Imaging [Paul Scherrer Institute] [LNS] | |
| dc.contributor.author | HENGGELER, Wolfgang | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DELMAS, Claude | |
| dc.date.issued | 2005 | |
| dc.identifier.issn | 0953-8984 | |
| dc.description.abstractEn | We have investigated S = 1/2 triangular lattice Li0.98Ni1.02O2 by a zero-field (ZF) and longitudinal-field (LF) μSR technique. The muon signals from Li0.98Ni1.02O2 could be fitted by a stretched exponential function at low temperatures. At about 30 K the power k of the stretched exponential function becomes about k = 2 for the ZF signal, i.e. the relaxation becomes practically a Gaussian. For the LF-μSR signals the exponent k tends to become 1 above T = 30 K, i.e. the signal becomes exponential. The relaxation rate λ becomes very high at temperature below T = 10 K for the ZF data whereas λ corresponding to LF data shows a maximum at T ~ 10 K. The LF relaxation rate remains finite (0.4 µs-1) at the lowest temperature (T ~ 2 K) investigated. This indicates that even at very low temperature muon spin becomes depolarized because muons pick up low energy excitations from the spin dynamics. We get a rough estimate of the magnetic exchange interaction of about 1 meV from the peak in the spin–spin correlation function. | |
| dc.language.iso | en | |
| dc.publisher | IOP Publishing | |
| dc.subject.en | Data acquisition | |
| dc.subject.en | Degrees of freedom (mechanics) | |
| dc.subject.en | Lithium compounds | |
| dc.subject.en | Lithium niobate | |
| dc.subject.en | Magnetic susceptibility | |
| dc.subject.en | Transition metals | |
| dc.subject.en | Heisenberg model | |
| dc.subject.en | Longitudinal-field (LF) | |
| dc.subject.en | Triangular lattice | |
| dc.subject.en | Zero-field (ZF) | |
| dc.subject.en | Crystal lattices | |
| dc.title.en | Muon spin rotation investigation of the S = 1/2 triangular lattice LiNiO2 | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1088/0953-8984/17/8/013 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Physics: Condensed Matter | |
| bordeaux.page | p. 1341–1350 | |
| bordeaux.volume | vol. 17, n° 8 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00022426 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Non spécifiée | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00022426v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Physics:%20Condensed%20Matter&rft.date=2005&rft.volume=vol.%2017,%20n%C2%B0%208&rft.spage=p.%201341%E2%80%931350&rft.epage=p.%201341%E2%80%931350&rft.eissn=0953-8984&rft.issn=0953-8984&rft.au=CHATTERJI,%20Tapan&HENGGELER,%20Wolfgang&DELMAS,%20Claude&rft.genre=article |
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