Abrupt Transition in Quasiparticle Dynamics at Optimal Doping in a Cuprate Superconductor System

N. Gedik, M. Langner, J. Orenstein, S. Ono, Yasushi Abe, and Yoichi Ando

Phys. Rev. Lett. 95, 117005 – Published 9 September 2005; Erratum Phys. Rev. Lett. 95, 149901 (2005)

Abstract

We report time-resolved measurements of the photoinduced change in reflectivity, $Δ R$ , in the ${Bi}_{2} {Sr}_{2} {Ca}_{1 - y} {Dy}_{y} {Cu}_{2} O_{8 + δ}$ (BSCCO) system of cuprate superconductors as a function of hole concentration. We find that the kinetics of quasiparticle decay and the sign of $Δ R$ both change abruptly where the superconducting transition temperature $T_{c}$ is maximal. These coincident changes suggest that a sharp transition in quasiparticle dynamics takes place precisely at optimal doping in the BSCCO system.

Received 15 March 2005
Corrected 22 September 2005

DOI:https://doi.org/10.1103/PhysRevLett.95.117005

Corrections

22 September 2005

Erratum

Publisher’s Note: Abrupt Transition in Quasiparticle Dynamics at Optimal Doping in a Cuprate Superconductor System [Phys. Rev. Lett. 95, 117005 (2005)]

N. Gedik, M. Langner, J. Orenstein, S. Ono, Yasushi Abe, and Yoichi Ando

Phys. Rev. Lett. 95, 149901 (2005)

Authors & Affiliations

N. Gedik^*, M. Langner, and J. Orenstein

Physics Department, University of California, Berkeley, Berkeley, California, USA and Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

S. Ono, Yasushi Abe^†, and Yoichi Ando

Central Research Institute of Electric Power Industry, Komae, Tokyo 201-8511, Japan

^*Present address: Laboratory for Molecular Sciences, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, CA 91125 Electronic address: gedik@caltech.edu
^†Present address: CERC, AIST, Tsukuba 205-8562, Japan

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Vol. 95, Iss. 11 — 9 September 2005

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