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Phys. Rev. B 79, 054422 (2009) [8 pages]

Incommensurate magnetic ordering in Ti-doped Sr3Ru2O7

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P. Steffens1,*, J. Farrell2, S. Price1, A. P. Mackenzie2, Y. Sidis3, K. Schmalzl4, and M. Braden1,†
1II. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany
2Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews KY16 9SS, Scotland
3Laboratoire Léon Brillouin, CEA/CNRS, F-91191 Gif-sur-Yvette CEDEX, France
4IFF, Forschungszentrum Jülich GmbH, JCNS at ILL, 38042 Grenoble Cedex 9, France

Received 17 July 2008; published 20 February 2009

Magnetic correlations in Ti-substituted Sr3(Ru1−xTix)2O7 have been studied by elastic and inelastic neutron-scattering techniques. Below transition temperatures of the order of 20 K, the samples with 7.5 and 10% of Ti content exhibit an incommensurate spin-density wave ordering with a propagation vector qic=(0.24,0.24,0), which does not reflect the dominant magnetic instabilities in pure Sr3Ru2O7. Strong inelastic correlations near qic were found to persist in Sr3(Ru1−xTix)2O7 far above the magnetic ordering; they become gapped in the ordered state.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.79.054422
DOI:
10.1103/PhysRevB.79.054422
PACS:
75.30.Fv, 75.25.+z, 75.30.Hx, 75.30.Kz

*Present address: Institut Laue Langevin, Grenoble, France; steffens@ill.eu

†braden@ph2.uni-koeln.de

 
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