Resonant Magnetic Excitations at High Energy in Superconducting YBa2Cu3O6.85

S. Pailhès, Y. Sidis, P. Bourges, V. Hinkov, A. Ivanov, C. Ulrich, L. P. Regnault, and B. Keimer
Phys. Rev. Lett. 93, 167001 – Published 14 October 2004

Abstract

A detailed inelastic neutron scattering study of the high temperature superconductor YBa2Cu3O6.85 provides evidence of new resonant magnetic features, in addition to the well-known resonant mode at 41 meV: (i) a commensurate magnetic resonance peak at 53 meV with an even symmetry under exchange of two adjacent CuO2 layers, and (ii) high-energy incommensurate resonant spin excitations whose spectral weight is around 54 meV. The locus and the spectral weight of these modes provides unrevealed insight about the momentum shape of the electron-hole spin-flip continuum of d-wave superconductors.

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  • Received 24 March 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.167001

©2004 American Physical Society

Authors & Affiliations

S. Pailhès1, Y. Sidis1, P. Bourges1,*, V. Hinkov2, A. Ivanov3, C. Ulrich2, L. P. Regnault4, and B. Keimer2

  • 1Laboratoire Léon Brillouin, CEA-CNRS, CE-Saclay, 91191 Gif sur Yvette, France
  • 2Max-Planck-Institut für Festkörperforschung, 70569 Stuttgart, Germany
  • 3Institut Laue Langevin, 156X, 38042 Grenoble cedex 9, France
  • 4CEA Grenoble, DRFMC, 38054 Grenoble cedex 9, France

  • *To whom correspondence should be addressed; E-mail: bourges@bali.saclay.cea.fr

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Vol. 93, Iss. 16 — 15 October 2004

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