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A. A. Maksimov; D. A. Pronin; S. V. Zaitsev; I. I. Tartakovskii; G. Blumberg; M. V. Klein; M. Karlow; S. L. Cooper; A. P. Paulikas; B. W. Veal

doi:10.1103/PhysRevB.54.R6901

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Influence of oxygen-ordering kinetics on Raman and optical response in Y ${Ba}_{2}$ ${Cu}_{3}$ $O_{6.4}$

A. A. Maksimov, D. A. Pronin, S. V. Zaitsev, I. I. Tartakovskii, G. Blumberg, M. V. Klein, M. Karlow, S. L. Cooper, A. P. Paulikas, and B. W. Veal

Phys. Rev. B 54, R6901(R) – Published 1 September 1996

Abstract

Kinetics of the optical and Raman response in Y ${Ba}_{2}$ ${Cu}_{3}$ $O_{6.4}$ were studied during room-temperature annealing following heat treatment. The superconducting $T_{c}$ , dc resistivity, and low-energy optical conductivity recover slowly, implying a long relaxation time for the carrier density. Short relaxation times are observed for the $B_{1 g}$ Raman scattering—magnetic, continuum, and phonon—and the charge transfer band. Monte Carlo simulations suggest that these two relaxation rates are related to two length scales corresponding to local oxygen ordering (fast) and long chain and twin formation (slow).

Received 24 June 1996

DOI:https://doi.org/10.1103/PhysRevB.54.R6901

Authors & Affiliations

A. A. Maksimov, D. A. Pronin, S. V. Zaitsev, and I. I. Tartakovskii

Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow district, 142432, Russia

G. Blumberg

NSF Science and Technology Center for Superconductivity and Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801-3080 and Institute of Chemical Physics and Biophysics, Rävala 10, Tallinn EE0001, Estonia

M. V. Klein, M. Karlow, and S. L. Cooper

NSF Science and Technology Center for Superconductivity and Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801-3080

A. P. Paulikas and B. W. Veal

Materials Science Division, Argonne National Laboratory, Argonne, Illinois, 60439

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Vol. 54, Iss. 10 — 1 September 1996

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