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Phonon Anomaly at Tc In (Y/Er)Ba2Cu3O7–δ

Published online by Cambridge University Press:  28 February 2011

Rajeshwar P. Sharma ,
L. E. Rehn ,
P. Baldo  and
J. Z. Liu
Rajeshwar P. Sharma
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
L. E. Rehn
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
P. Baldo
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
J. Z. Liu
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
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Abstract

Ion channeling in single crystals of (Y/Er)Ba2Cu3O7–δ reveal an abrupt change (~0.01Å) at the superconducting transition temperature (Tc) in displacements of the Cu and O atoms perpendicular to the [001] direction. This anomalous change in atomic displacements shifts directly with stoichiometry-induced changes in Tc. Blocking patterns indicate no large structural changes across Tc.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 1033
Copyright
Copyright © Materials Research Society 1990

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References

1 Francois, M., Junod, A., Yvon, K., Hewat, A. W., Capponi, J. J., Strobbel, P., Marezio, M. and Fischer, P., Solid State Commun. 66, 1117 (1988).Google Scholar
2 Sharma, R. P., Rotella, F. J., Rehn, L. E. and Jorgensen, J. D. (1989) to be published.Google Scholar
3 Cooper, S. L., Klein, M. V., Pazol, B. G., Rice, J. P. and Ginsberg, D. M., Phys. Rev. B 37, 5920 (1988).Google Scholar
4 Ruf, T., Thomsan, C., Liu, R., and Cardona, M., Phys. Rev. B 38, 11985 (1989).Google Scholar
5 Migliori, A., Chen, Ting, Alavi, B. and Gruner, G., Solid State Commun. 63, 827 (1987).Google Scholar
6 Bishop, D. J., Ramirez, A. P., Gammel, P. L., Batlogg, B., Rietman, E. A., Cava, R. J. and Millis, A. J., Phys. Rev. B 36, 2408 (1987).Google Scholar
7 Materials Analysis by Channeling, Ion, Feldman, L. C., Mayer, J. W. and Plcraux, S. T., ( Academic Press, New York, 1982).Google Scholar
8 Sharma, R. P., Rehn, L. E., Baldo, P. M. and Liu, J. Z., Phys. Rev. B 38, 9287 (1988)Google Scholar
9 Sharma, R. P., Rehn, L. E., Baldo, P. M., and Liu, J. Z., Phys. Rev. Lett. 62, 2869 (1989).Google Scholar
10 Handbook of Spectroscopy, Robinson, J. W., ed., Vol. 1 (CRC Press, 1974).Google Scholar
11 Cohen, D. D. and Harrigan, M., Atomic Data and Nuclear Data Tables, 33, 256 (1985).Google Scholar
12 Lindhard, J., Dan Vidensk, K. Selsk Mat. Fys. Medd. 34, No. 14 (1965).Google Scholar