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dc.contributor.author | Uemura, Y. J. | en |
dc.contributor.author | Aczel, A. A. | en |
dc.contributor.author | Ajiro, Y. | en |
dc.contributor.author | Carlo, J. P. | en |
dc.contributor.author | Goko, T. | en |
dc.contributor.author | Goldfeld, D. A. | en |
dc.contributor.author | Kitada, A. | en |
dc.contributor.author | Luke, G. M. | en |
dc.contributor.author | MacDougall, G. J. | en |
dc.contributor.author | Mihailescu, I. G. | en |
dc.contributor.author | Rodriguez, J. A. | en |
dc.contributor.author | Russo, P. L. | en |
dc.contributor.author | Tsujimoto, Y. | en |
dc.contributor.author | Wiebe, C. R. | en |
dc.contributor.author | Williams, T. J. | en |
dc.contributor.author | Yamamoto, T. | en |
dc.contributor.author | Yoshimura, K. | en |
dc.contributor.author | Kageyama, H. | en |
dc.date.accessioned | 2010-05-06T05:22:11Z | - |
dc.date.available | 2010-05-06T05:22:11Z | - |
dc.date.issued | 2009-11 | - |
dc.identifier.issn | 1098-0121 | - |
dc.identifier.uri | http://hdl.handle.net/2433/109859 | - |
dc.description.abstract | We report muon spin relaxation (μSR) and magnetic-susceptibility measurements on Cu(Cl, Br)La(Nb, Ta)2O7, which demonstrate: (a) the absence of static magnetism in (CuCl)LaNb2O7 down to 15 mK confirming a spin-gapped ground state; (b) phase separation between partial volumes with a spin-gap and static magnetism in (CuCl)La(Nb, Ta)2O7; (c) history-dependent magnetization in the (Nb, Ta) and (Cl, Br) substitution systems; (d) a uniform long-range collinear antiferromagnetic state in (CuBr)LaNb2O7; and (e) a decrease in Néel temperature with decreasing Br concentration x in Cu(Cl1−xBrx)LaNb2O7 with no change in the ordered Cu moment size for 0.33≤x≤1. Together with several other μSR studies of quantum phase transitions in geometrically frustrated spin systems, the present results reveal that the evolution from a spin-gap to a magnetically ordered state is often associated with phase separation and/or a first-order phase transition. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | en |
dc.rights | © 2009 The American Physical Society | en |
dc.subject | antiferromagnetic materials | en |
dc.subject | copper compounds | en |
dc.subject | frustration | en |
dc.subject | lanthanum compounds | en |
dc.subject | magnetic susceptibility | en |
dc.subject | magnetisation | en |
dc.subject | muon probes | en |
dc.subject | Neel temperature | en |
dc.subject | phase separation | en |
dc.subject | spin systems | en |
dc.title | Muon spin relaxation studies of the frustrated quasi-two-dimensional square-lattice spin system Cu(Cl,Br)La(Nb,Ta)(2)O-7: Evolution from spin-gap to antiferromagnetic state | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.ncid | AA11187113 | - |
dc.identifier.jtitle | PHYSICAL REVIEW B | en |
dc.identifier.volume | 80 | - |
dc.identifier.issue | 17 | - |
dc.relation.doi | 10.1103/PhysRevB.80.174408 | - |
dc.textversion | publisher | - |
dc.identifier.artnum | 174408 | - |
dc.relation.url | http://link.aps.org/doi/10.1103/PhysRevB.80.174408 | - |
dcterms.accessRights | open access | - |
出現コレクション: | 学術雑誌掲載論文等 |
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