Magnetic Correlations and the Anisotropic Kondo Effect in Ce1xLaxAl3

E. A. Goremychkin, R. Osborn, B. D. Rainford, T. A. Costi, A. P. Murani, C. A. Scott, and P. J. C. King
Phys. Rev. Lett. 89, 147201 – Published 12 September 2002

Abstract

By combining the results of muon spin relaxation and inelastic neutron scattering in the heavy fermion compounds Ce1xLaxAl3 (0.0x0.2), we show that static magnetic correlations are suppressed above a characteristic temperature, T*, by electronic dissipation rather than by thermal disorder. Below T*, an energy gap opens in the single-ion magnetic response in agreement with the predictions of the anisotropic Kondo model. Scaling arguments suggest that similar behavior may underlie the “hidden order” in URu2Si2.

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  • Received 30 November 2001

DOI:https://doi.org/10.1103/PhysRevLett.89.147201

©2002 American Physical Society

Authors & Affiliations

E. A. Goremychkin1, R. Osborn1, B. D. Rainford2, T. A. Costi3,4, A. P. Murani4, C. A. Scott2, and P. J. C. King5

  • 1Argonne National Laboratory, Argonne, Illinois 60439-4845
  • 2Department of Physics, University of Southampton, Southampton, SO17 1BJ, United Kingdom
  • 3Institut für Theorie der Kondensierten Materie, Universität Karlsruhe, 76128 Karlsruhe, Germany
  • 4Institut Laue Langevin, F-38042 Grenoble Cédex, France
  • 5ISIS Pulsed Neutron and Muon Facility, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, United Kingdom

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Vol. 89, Iss. 14 — 30 September 2002

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