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  Spin-Triplet Superconductivity in UNi2Al3 Revealed by the 27Al Knightshift Measurement

Ishida, K., Ozaki, D., Kamatsuka, T., Tou, H., Kyogaku, M., Kitaoka, Y., et al. (2002). Spin-Triplet Superconductivity in UNi2Al3 Revealed by the 27Al Knightshift Measurement. Physical Review Letters, 89(3): 037002, pp. 037002-037002. doi:10.1103/PhysRevLett.89.037002.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0015-3127-0 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0017-FEAE-4
Genre: Journal Article

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 Creators:
Ishida, K., Author
Ozaki, D., Author
Kamatsuka, T., Author
Tou, H., Author
Kyogaku, M., Author
Kitaoka, Y., Author
Tateiwa, N., Author
Sato, N. K., Author
Aso, N., Author
Geibel, C.1, Author           
Steglich, F.2, Author           
Affiliations:
1Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              
2Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467              

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 Abstract: We report Al-27 Knight shift (K-27) measurement on a single- crystal UNi2Al3 that reveals a coexistence of superconductivity and a spin-density-wave (SDW) type of magnetic ordering (T- SDW=4.5 K ). The spin part of K-27, K-27(s), does not change down to 50 mK across the superconducting (SC) transition temperature T(c)similar to0.9 K . In contrast with the isostructural compound UPd2Al (3) (T(c)similar to2 K ), which was identified to be a spin-singlet d -wave superconductor, the behavior of K-27 strongly supports that UNi2Al3, like UPt3 and Sr2RuO4 , belongs to a class of spin-triplet SC pairing state superconductors.

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Language(s): eng - English
 Dates: 2002-07-15
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 17435
ISI: 000176599500033
DOI: 10.1103/PhysRevLett.89.037002
 Degree: -

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Title: Physical Review Letters
  Alternative Title : Phys. Rev. Lett.
Source Genre: Journal
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Pages: - Volume / Issue: 89 (3) Sequence Number: 037002 Start / End Page: 037002 - 037002 Identifier: ISSN: 0031-9007