Relaxation time of the order parameter in a high-temperature superconductor

Authors

G.L. Eesley, Department of Physics, General Motors Research Laboratories, Warren, Michigan
J. Heremans, Department of Physics, General Motors Research Laboratories, Warren, Michigan
M.S. Meyer, Department of Physics, General Motors Research Laboratories, Warren, Michigan
G.L. Doll, Department of Physics, General Motors Research Laboratories, Warren, Michigan
Sy_Hwang Liou, University of Nebraska-LincolnFollow

Date of this Version

December 1990

Comments

Published by American Physical Society. Phys. Rev. Lett., 65, 3445(1990). http://prl.aps.org. Copyright © 1990 American Physical Society. Permission to use.

Abstract

We present femtosecond time-resolved measurements on the high-T_c superconductor Tl₂Ba₂Ca₂Cu₃O₁₀. At temperatures below T_c, we observe a relaxation process which is distinct from the equilibration of hot carriers in the normal state. Our results demonstrate an increasing relaxation rate as the superconducting gap opens. This is consistent with the behavior of conventional metallic superconductors.