Effect of nonmagnetic impurities on the magnetic resonance peak in YBa2Cu3O7

H. F. Fong, P. Bourges, Y. Sidis, L. P. Regnault, J. Bossy, A. Ivanov, D. L. Milius, Ilhan A. Aksay, B. Keimer

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Abstract

The magnetic excitation spectrum of a YBa2Cu3O7 crystal containing 0.5% of nonmagnetic (Zn) impurities has been determined by inelastic neutron scattering. Whereas in the pure system a sharp resonance peak at E≃40meV is observed exclusively below the superconducting transition temperature Tcthe magnetic response in the Zn-substituted system is broadened significantly and vanishes at a temperature much higher than Tc. The energy-integrated spectral weight observed near q=(π,π) increases with Zn substitution, and only about half of the spectral weight is removed at Tc.

Original languageEnglish (US)
Pages (from-to)1939-1942
Number of pages4
JournalPhysical review letters
Volume82
Issue number9
DOIs
StatePublished - Jan 1 1999

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Fong, H. F., Bourges, P., Sidis, Y., Regnault, L. P., Bossy, J., Ivanov, A., Milius, D. L., Aksay, I. A., & Keimer, B. (1999). Effect of nonmagnetic impurities on the magnetic resonance peak in YBa2Cu3O7. Physical review letters, 82(9), 1939-1942. https://doi.org/10.1103/PhysRevLett.82.1939