Effect of nonmagnetic impurities on the magnetic resonance peak in YBa2Cu3O7

Citation:

Fong, H. F. ; Bourges, P. ; Sidis, Y. ; Regnault, L. P. ; Bossy, J. ; Ivanov, A. ; Milius, D. L. ; Aksay, I. A. ; Keimer, B. Effect of nonmagnetic impurities on the magnetic resonance peak in YBa2Cu3O7. Physical Review Letters 1999, 82, 1939-1942.

Date Published:

Mar

Type of Article:

Article

ISBN Number:

0031-9007

Accession Number:

WOS:000078877000035

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 similar or equal to 40 meV is observed exclusively below the superconducting transition temperature T-c, the magnetic response in the Zn-substituted system is broadened significantly and vanishes at a temperature much higher than T-c. The energy-integrated spectral weight observed near q = (pi, pi) increases with Zn substitution, and only about half of the spectral weight is removed at T-c.

Last updated on 07/02/2018