51V-NMR Studies on the Spin Dynamics of S=1/2 Zig-Zag Chains of VO5 Pyramids.
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- Kobayashi Yoshiaki
- Department of Physics, Division of Material Science, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–8602 CREST, Japan Science and Technology Corporation (JST)
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- Fukamachi Toshihiko
- Department of Physics, Division of Material Science, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–8602
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- Kanada Masaki
- Department of Physics, Division of Material Science, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–8602
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- Harashina Hiroshi
- Department of Physics, Division of Material Science, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–8602 CREST, Japan Science and Technology Corporation (JST)
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- Tanaka Shukichi
- Department of Physics, Saga University, Honjo–1, Saga–city, Saga 840–8502
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- Sato Masatoshi
- Department of Physics, Division of Material Science, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–8602 CREST, Japan Science and Technology Corporation (JST)
Bibliographic Information
- Other Title
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- <sup><b>51</b></sup>V-NMR Studies on the Spin Dynamics of<i><i>S</i>=<b>1/2</b></i>Zig-Zag Chains of VO<sub><b>5</b></sub>Pyramids
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Description
NMR Knight shifts K and nuclear relaxation rates 1/T1 have been studied on the V4+ sites of two compounds [N(CH3)4]V3O7 and (en)2ZnV6O14 which are known to exhibit spin-gap behavior from their susceptibility data. The activation-type behavior has been observed in K and 1/T1, confirming the existence of the spin-gap in these systems. The frequency (ω N) dependence of 1/T1 of [N(CH3)4]V3O7 has been found to be 1/√ ω N-type one and 1/T1 of (en)2ZnV6O14 is linear in -ln (ω N), indicating the diffusive and ballistic characters of the triplet excitations, respectively. The results are discussed in relation to the theory recently developed by Sachdev and Damle [Phys. Rev. B 57 (1998) 8307].
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 68 (1), 273-278, 1999
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282679158675712
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- NII Article ID
- 110001955228
- 210000101797
- 130004536770
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- NII Book ID
- AA00704814
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- BIBCODE
- 1999JPSJ...68..273K
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 4647379
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed