Journal article
Muon-spin relaxation measurements on the dimerized spin-1/2 chains NaTiSi2O6 and TiOCl
- Abstract:
- We report muon spin relaxation (μSR) and magnetic susceptibility investigations of two Ti3+ (S=1/2) chain compounds, NaTiSi2O6 and TiOCl, each of which exhibits a spin gap at low temperature. From these we conclude that the spin gap in NaTiSi2O6, which arises from orbital ordering at 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 Tcl=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.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(bin, 313.8KB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevB.75.094404
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review B More from this journal
- Volume:
- 75
- Issue:
- 9
- Article number:
- 094404
- Publication date:
- 2007-03-01
- DOI:
- EISSN:
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1550-235x
- ISSN:
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1098-0121
- Language:
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English
- Keywords:
- Subjects:
- UUID:
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uuid:07d87e4d-d670-4a2c-9586-545fd5f076a0
- Local pid:
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ora:2209
- Deposit date:
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2008-07-23
- ARK identifier:
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2007
- Notes:
- Citation: Baker, P. J. et al. (2007). 'Muon-spin relaxation measurements on the dimerized spin-1/2 chains NaTiSi2O6 and TiOCl', Physical Review B, 75, 094404. [Available at http://prb.aps.org/].
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