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  Alternating spin chain compound AgVOAsO4 probed by 75As NMR

Ahmed, N., Khuntia, P., Ranjith, K. M., Rosner, H., Baenitz, M., Tsirlin, A. A., et al. (2017). Alternating spin chain compound AgVOAsO4 probed by 75As NMR. Physical Review B, 96(22): 224423, pp. 1-6. doi:10.1103/PhysRevB.96.224423.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-9FF7-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-A14E-A
Genre: Journal Article

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 Creators:
Ahmed, N.1, Author
Khuntia, P.2, Author              
Ranjith, K. M.2, Author              
Rosner, H.2, Author              
Baenitz, M.3, Author              
Tsirlin, A. A.4, Author              
Nath, R.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Michael Baenitz, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863471              
4Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              

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 Abstract: As-75 NMR measurements were performed on a polycrystalline sample of spin-1/2 alternating spin chain Heisenberg antiferromagnet AgVOAsO4. The temperature-dependentNMRshiftK(T), which is a direct measure of the intrinsic spin susceptibility, agrees very well with the spin-1/2 alternating-chain model, justifying the assignment of the spin lattice. From the analysis of K(T), magnetic exchange parameters were estimated as follows: the leading exchange J/k(B) similar or equal to 38.4 K and the alternation ratio alpha= J'/J similar or equal to 0.69. The transferred hyperfine coupling between the As-75 nucleus and V4+ spins obtained by comparing the NMR shift with the bulk susceptibility amounts to A(hf) similar or equal to 3.3 T mu B. The effect of interchain couplings on the low-temperature activated behavior of K(T) and the spin-lattice relaxation rate 1/T-1 is identified.

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Language(s): eng - English
 Dates: 2017-12-192017-12-19
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1103/PhysRevB.96.224423
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 96 (22) Sequence Number: 224423 Start / End Page: 1 - 6 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008