Superconductivity-induced anomalies in the spin excitation spectra of underdoped YBa2Cu3O6+x

Citation:

Fong, H. F. ; Keimer, B. ; Milius, D. L. ; Aksay, I. A. Superconductivity-induced anomalies in the spin excitation spectra of underdoped YBa2Cu3O6+x. Physical Review Letters 1997, 78, 713-716.

Date Published:

Jan

Type of Article:

Article

ISBN Number:

0031-9007

Accession Number:

WOS:A1997WV39100038

Abstract:

Polarized and unpolarized neutron scattering have been used to determine the effect of superconductivity on the magnetic excitation spectra of YBa2Cu3O6.5 (T-c = 52 K) and YBa2Cu3O6.7 (T-c = 67 K); Pronounced enhancements of the spectral weight centered around 25 and 33 meV, respectively; are observed below T-c in both crystals, compensated predominantly by a loss of spectral weight at higher energies. The data provide important clues to the origin of the 40 meV magnetic resonance peak in YBa2Cu3O7.

Last updated on 07/02/2018