Muon-spin relaxation measurements on the dimerized spin-1/2 chains NaTiSi2O6 and TiOCl
We report muon spin relaxation (μSR) and magnetic susceptibility investigations of two Ti3+ (S=1/2) chain compounds, NaTi Si2 O6 and TiOCl, each of which exhibits a spin gap at low temperature. From these we conclude that the spin gap in NaTi Si2 O6, which arises from orbital ordering at TOO =210 K,...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2007
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| _version_ | 1797058807503781888 |
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| author | Baker, P Blundell, S Pratt, F Lancaster, T Brooks, M Hayes, W Isobe, M Ueda, Y Hoinkis, M Sing, M Klemm, M Horn, S Claessen, R |
| author_facet | Baker, P Blundell, S Pratt, F Lancaster, T Brooks, M Hayes, W Isobe, M Ueda, Y Hoinkis, M Sing, M Klemm, M Horn, S Claessen, R |
| author_sort | Baker, P |
| collection | OXFORD |
| description | We report muon spin relaxation (μSR) and magnetic susceptibility investigations of two Ti3+ (S=1/2) chain compounds, NaTi Si2 O6 and TiOCl, each of which exhibits a spin gap at low temperature. From these we conclude that the spin gap in NaTi Si2 O6, which arises from orbital ordering at TOO =210 K, is temperature independent below TOO, with a value of 2Δ=700 (100) K. In TiOCl, we find thermally activated spin fluctuations corresponding to a spin gap 2Δ=440 (60) K below Tc1 =67 K. We can describe both the μSR and susceptibility data in terms of a model based on the dimerization of the Ti3+ chains. We also compare the methods used to extract the spin gap and the concentration of free spins within the samples from μSR and magnetic susceptibility data. © 2007 The American Physical Society. |
| first_indexed | 2024-03-06T19:55:34Z |
| format | Journal article |
| id | oxford-uuid:2574f947-0973-43a3-980c-8ecf994667d9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:55:34Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:2574f947-0973-43a3-980c-8ecf994667d92022-03-26T11:55:44ZMuon-spin relaxation measurements on the dimerized spin-1/2 chains NaTiSi2O6 and TiOClJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2574f947-0973-43a3-980c-8ecf994667d9EnglishSymplectic Elements at Oxford2007Baker, PBlundell, SPratt, FLancaster, TBrooks, MHayes, WIsobe, MUeda, YHoinkis, MSing, MKlemm, MHorn, SClaessen, RWe report muon spin relaxation (μSR) and magnetic susceptibility investigations of two Ti3+ (S=1/2) chain compounds, NaTi Si2 O6 and TiOCl, each of which exhibits a spin gap at low temperature. From these we conclude that the spin gap in NaTi Si2 O6, which arises from orbital ordering at TOO =210 K, is temperature independent below TOO, with a value of 2Δ=700 (100) K. In TiOCl, we find thermally activated spin fluctuations corresponding to a spin gap 2Δ=440 (60) K below Tc1 =67 K. We can describe both the μSR and susceptibility data in terms of a model based on the dimerization of the Ti3+ chains. We also compare the methods used to extract the spin gap and the concentration of free spins within the samples from μSR and magnetic susceptibility data. © 2007 The American Physical Society. |
| spellingShingle | Baker, P Blundell, S Pratt, F Lancaster, T Brooks, M Hayes, W Isobe, M Ueda, Y Hoinkis, M Sing, M Klemm, M Horn, S Claessen, R Muon-spin relaxation measurements on the dimerized spin-1/2 chains NaTiSi2O6 and TiOCl |
| title | Muon-spin relaxation measurements on the dimerized spin-1/2 chains NaTiSi2O6 and TiOCl |
| title_full | Muon-spin relaxation measurements on the dimerized spin-1/2 chains NaTiSi2O6 and TiOCl |
| title_fullStr | Muon-spin relaxation measurements on the dimerized spin-1/2 chains NaTiSi2O6 and TiOCl |
| title_full_unstemmed | Muon-spin relaxation measurements on the dimerized spin-1/2 chains NaTiSi2O6 and TiOCl |
| title_short | Muon-spin relaxation measurements on the dimerized spin-1/2 chains NaTiSi2O6 and TiOCl |
| title_sort | muon spin relaxation measurements on the dimerized spin 1 2 chains natisi2o6 and tiocl |
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