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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2003     Display Documents

ID: 6997.0, MPI für Festkörperforschung / FKF Publikationen 2003
Observation of two-dimensional spin fluctuations in the bilayer ruthenate Sr3Ru2O7 by inelastic neutron scattering
Authors:Capogna, L.; Forgan, E. M.; Hayden, S. M.; Wildes, A.; Duffy, J. A.; Mackenzie, A. P.; Perry, R. S.; Ikeda, S.; Maeno, Y.; Brown, S. P.
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Physical Review B
Issue / Number:1
Sequence Number of Article:012504
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:We report an observation of two-dimensional incommensurate
magnetic fluctuations in the layered metallic perovskite
Sr3Ru2O7. The wave vectors where the magnetic fluctuations are
strongest are different from those observed in the
superconducting single layer ruthenate Sr2RuO4 and appear to be
determined by Fermi surface nesting. No antiferromagnetic
ordering is observed for temperatures down to 1.5 K. For
temperatures Tgreater than or similar to20 K, the fluctuations
become predominately ferromagnetic. Our inelastic neutron
scattering measurements provide concrete evidence of the
coexistence of competing interactions in Sr3Ru2O7 and of the
low-energy scale of the fluctuations.
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:; Max Planck Inst, FKF, D-70569 Stuttgart, Germany
; Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England
; Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England
; Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
; Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
; Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland
; Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
; Japan Sci & Technol Corp, CREST, Kawaguki, Saitama 3320012, Japan
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