Electronic excitations of the YBa₂Cu₃O_7-x superconductor: A study by transmission electron-energy-loss spectroscopy with an electron microprobe

Authors

C.H. Chen, AT&T Bell Laboratories, Murray Hill, New Jersey
L.F. Schneemeyer, AT&T Bell Laboratories, Murray Hill, New Jersey
Sy_Hwang Liou, University of Nebraska-LincolnFollow
M. Hong, AT&T Bell Laboratories, Murray Hill, New Jersey
J. Kwo, AT&T Bell Laboratories, Murray Hill, New Jersey
H.S. Chen, AT&T Bell Laboratories, Murray Hill, New Jersey
J.V. Waszczak, AT&T Bell Laboratories, Murray Hill, New Jersey

Date of this Version

June 1988

Comments

Published by American Physical Society. Phys. Rev. B37, 9780 (1988). http://prb.aps.org. Copyright © 1988 American Physical Society. Permission to use.

Abstract

Interband and core-level transitions and plasmon resonance in the high-temperature oxide superconductor YBa₂Cu₃O_7-x were studied by transmission electron-energy-loss spectroscopy using an electron microprobe ∼5-10 Å in size. Both single-crystal and polycrystalline ceramic samples have been examined. No significant change in electronic structure was observed at the grain boundaries. A 13.5-eV interband-transition peak was found to be sensitive to damages created by ion-beam bombardment.