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          Institute: MPI für Chemische Physik fester Stoffe     Collection: publications 2002     Display Documents

ID: 17435.0, MPI für Chemische Physik fester Stoffe / publications 2002
Spin-Triplet Superconductivity in UNi2Al3 Revealed by the 27Al Knightshift Measurement
Authors:Ishida, K.; Ozaki, D.; Kamatsuka, T.; Tou, H.; Kyogaku, M.; Kitaoka, Y.; Tateiwa, N.; Sato, N. K.; Aso, N.; Geibel, C.; Steglich, F.
Date of Publication (YYYY-MM-DD):2002-07-15
Title of Journal:Physical Review Letters
Journal Abbrev.:Phys. Rev. Lett.
Issue / Number:3
Start Page:037002
End Page:037002
Sequence Number of Article:037002
Review Status:Peer-review
Audience:Not Specified
Abstract / Description: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.
Comment of the Author/Creator:Date: 2002, JUL 15
External Publication Status:published
Document Type:Article
Communicated by:Ina Wanschura
Affiliations:MPI für chemische Physik fester Stoffe
External Affiliations:Osaka Univ, Grad Sch Sci, Dept Phys Sci, Osaka 5608531, Japan; Osaka Univ, Grad Sch Sci, Dept Phys Sci, Osaka 5608531, Japan; Nagoya Univ, Grad Sch Sci, Dept Phys, Nagoya, Aichi 4648602, Japan; Univ Tokyo, Inst Solid State Phys, Neutron Scattering Lab, Ibaraki 3191106, Japan; Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany
Identifiers:ISI:000176599500033 [ID No:1]
ISSN:0031-9007 [ID No:2]
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