Coexistence of localized and collective magnetism in the coupled-spin-tetrahedra system Cu4Te5O12C14
DC Field | Value | Language |
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dc.contributor.author | Choi, Kwang-Yong | - |
dc.contributor.author | Do, Seunghwan | - |
dc.contributor.author | Lemmens, Peter | - |
dc.contributor.author | van Tol, Johan | - |
dc.contributor.author | Shin, Jiseon | - |
dc.contributor.author | Jeon, Gun Sang | - |
dc.contributor.author | Skourski, Yurii | - |
dc.contributor.author | Rhyee, Jong-Soo | - |
dc.contributor.author | Berger, Helmuth | - |
dc.date.available | 2019-03-08T20:56:46Z | - |
dc.date.issued | 2014-11 | - |
dc.identifier.issn | 1098-0121 | - |
dc.identifier.issn | 2469-9969 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/11609 | - |
dc.description.abstract | We report high-field magnetization, electron spin resonance (ESR), and Raman scattering measurements of the coupled spin-tetrahedra system Cu4Te5O12C14 with magnetic ordering at T-N = 13.6 K. We find thermodynamic and spectroscopic signatures for the concomitant occurrence of localized and collective magnetism. Magnetization measurements up to 60 T exhibit a spin-flop transition at mu H-0(SF) = 16 T only for H vertical bar vertical bar c as well as periodic magnetization steps at, mu H-0 = 16.5, 24.8, 33.8, 42.3, and 49.7 T, which are independent of the crystallographic orientations. For T > T-N, the temperature dependence of ESR linewidth is described by a critical power law, Delta B-pp(T) alpha (T > T-N)(-0.56+/-0.02). For T < T-N, an antiferromagnetic resonance mode is observed for 1111c, and its linewidth is given by Delta B-pp(T) alpha T3.13+/-0.04, being close to T-4 expected for a classical magnet. Raman spectra show three one-magnon-like excitations superimposed on a broad two-magnon continuum. While the two higher frequency modes show an intensity variation in accordance to a three-dimensional Heisenberg antiferromagnet, the lower frequency mode clearly deviates. These results suggest that Cu4Te5O12C14 is a unique material which shows a dual character of zero-dimensional, localized and three-dimensional, collective magnetic behaviors. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Coexistence of localized and collective magnetism in the coupled-spin-tetrahedra system Cu4Te5O12C14 | - |
dc.type | Article | - |
dc.identifier.doi | 10.1103/PhysRevB.90.184402 | - |
dc.identifier.bibliographicCitation | PHYSICAL REVIEW B, v.90, no.18 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000345416000004 | - |
dc.identifier.scopusid | 2-s2.0-84911380335 | - |
dc.citation.number | 18 | - |
dc.citation.title | PHYSICAL REVIEW B | - |
dc.citation.volume | 90 | - |
dc.type.docType | Article | - |
dc.publisher.location | 미국 | - |
dc.subject.keywordPlus | LIGHT-SCATTERING | - |
dc.subject.keywordPlus | CU2TE2O5BR2 | - |
dc.subject.keywordPlus | CLUSTERS | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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