Microwave absorption in the superconducting and normal phases of Y-Ba-Cu-O

Authors

R. Durný, University of Utah - Salt Lake City
J. Hautala, University of Utah - Salt Lake City
Stephen Ducharme, University of Nebraska - LincolnFollow
B. Lee, University of Utah - Salt Lake City
O.G. Symko, University of Utah - Salt Lake City
P.C. Taylor, University of Utah - Salt Lake City
D.J. Zheng, University of Utah - Salt Lake City
J.A. Xu, Norton Christensen Inc., Salt Lake City, Utah

Date of this Version

August 1987

Comments

Published by American Physical Society. Physics Review B 36, 2361 (1987). Copyright © 1987 American Physical Society. Permission to use.

Abstract

Microwave absorption in a dc magnetic field up to 12 kG, attributed to nonequilibrium contributions to the ac susceptibility, appears at T_c as the sample is cooled. ESR measurements of Y-Ba-Cu-O show that Cu²⁺ exists only in the fraction of the sample which is not superconducting in a distorted octahedral surrounding.