Spin dynamics in Na4-xIr3O8 (x=0.3 and 0.7) investigated by Na-23 NMR and mu SR
DC Field | Value | Language |
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dc.contributor.author | Yoon, Sungwon | - |
dc.contributor.author | Baek, S-H | - |
dc.contributor.author | Balodhi, Ashiwini | - |
dc.contributor.author | Lee, W-J | - |
dc.contributor.author | Choi, K-Y | - |
dc.contributor.author | Watanabe, I. | - |
dc.contributor.author | Lord, J. S. | - |
dc.contributor.author | Buechner, B. | - |
dc.contributor.author | Suh, B. J. | - |
dc.contributor.author | Singh, Yogesh | - |
dc.date.available | 2019-03-08T16:00:13Z | - |
dc.date.issued | 2015-12 | - |
dc.identifier.issn | 0953-8984 | - |
dc.identifier.issn | 1361-648X | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/8817 | - |
dc.description.abstract | We report Na-23 nuclear magnetic resonance (NMR) and zero-field (ZF) and longitudinal-field (LF) muon spin relaxation (mu SR) measurements of the depleted hyperkagome compounds Na4-xIr3O8 (x = 0.3 and 0.7), which undergo an insulator-semimetal transition as a function of x. The Na-23 spin-lattice relaxation rates, T-1(-1), follow a T-2.5 power law behavior at accessible temperatures of T = 120-350 K. A substantial temperature dependence of T-1(-1) indicates the presence of gapped excitations at elevated temperatures through the transition to a semimetallic phase. ZF-mu SR results reveal that hole-doping leads to a melting of quasi-static order to a dynamically fluctuating state. The very slow muon depolarization rate which varies hardly with temperature indicates that spins are close to an itinerant limit in the largest doping x = 0.7. The dynamic relaxation rates extracted from the LF- aeSR spectra show a three-dimensional diffusive transport. Our combined NMR and ae SR results suggest the occurrence of intriguing spin and charge excitations across the insulator-semimetal transition. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.title | Spin dynamics in Na4-xIr3O8 (x=0.3 and 0.7) investigated by Na-23 NMR and mu SR | - |
dc.type | Article | - |
dc.identifier.doi | 10.1088/0953-8984/27/48/485603 | - |
dc.identifier.bibliographicCitation | JOURNAL OF PHYSICS-CONDENSED MATTER, v.27, no.48 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000365346900015 | - |
dc.identifier.scopusid | 2-s2.0-84948124234 | - |
dc.citation.number | 48 | - |
dc.citation.title | JOURNAL OF PHYSICS-CONDENSED MATTER | - |
dc.citation.volume | 27 | - |
dc.type.docType | Article | - |
dc.publisher.location | 영국 | - |
dc.subject.keywordAuthor | hyperkagome | - |
dc.subject.keywordAuthor | frustrated spin systems | - |
dc.subject.keywordAuthor | insulator-metal transition | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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