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Derivative Analysis of the High Temperature Superconducting Transition

Published online by Cambridge University Press:  28 February 2011

Carmen Almasan
Affiliation:
Department of Physics and Astronomy, University of South Carolina, Columbia, S.C. 29208, USA
J. Estrada
Affiliation:
Department of Physics and Astronomy, University of South Carolina, Columbia, S.C. 29208, USA
C. P. Poole Jr
Affiliation:
Department of Physics and Astronomy, University of South Carolina, Columbia, S.C. 29208, USA
T. Datta
Affiliation:
Department of Physics and Astronomy, University of South Carolina, Columbia, S.C. 29208, USA
H. A. Farach
Affiliation:
Department of Physics and Astronomy, University of South Carolina, Columbia, S.C. 29208, USA
D. U. Gubser
Affiliation:
Naval Research Laboratory, Washington, D.C. 20375, USA.
S. A. Wolf
Affiliation:
Naval Research Laboratory, Washington, D.C. 20375, USA.
L. E. Toth
Affiliation:
Naval Research Laboratory, Washington, D.C. 20375, USA.
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Abstract

The shape of the normalized temperature derivative of the dc susceptibility provides useful information about superconducting materials. We propose that the position of the derivative peak be defined as the transition temperature Tc and the width of this peak define its sharpness.

Type
Research Article
Copyright
Copyright © Materials Research Society 1988

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References

[1] See typical examples in Extended Abstracts High Temperature Superconductors Symposium S. Ed. Gubser, D.U. and Schulter, M., Material Research Society, Pittsburgh (1987).Google Scholar
[2] Datta, T., Poole, C.P. Jr, Farach, H.A., Almasan, Carmen, Estrada, J., Gubser, D.U. and Wolf, S.A., (submitted for publication) USC preprint 1987.Google Scholar
[3] See Poole, Charles P. Jr, Electron Spin Resonance, 2nd Ed. John Wiley & Sons, NY (1983) and references therein.Google Scholar
[4] Datta, T., Almasan, C, Gubser, D.U., Wolf, S.A., Osofsky, M. and Toth, L.E., p. 817, Novel Superconductivity, Proc. of Int'l Workshop at Berkeley, CA, USA. Ed. Wolf, S.A. and Kresin, V.Z., Plenum, NY (1987).Google Scholar
[5] Qadri, S.B., Toth, L.E., Osofsky, M.S., Lawrence, S., Gubser, D.U. and Wolf, S.A., Phys. Rev. B35, 7235 (1987);CrossRefGoogle Scholar
Skelton, E.F. et al. Phys. Rev. B35, 7140 (1987).CrossRefGoogle Scholar
Rhyne, J.J. et al. Phys. Rev., 36, 2294 (1987).CrossRefGoogle Scholar
[6] London, F., Superfluids, Vol. 1, Dover, NY (1961).Google Scholar
[7] Finnemore, D.K. et al., Phys. Rev. B 35, 5319 (1987).CrossRefGoogle Scholar
Farrell, D.E. et al., Phys. Rev. B 35, 8797 (1987).CrossRefGoogle Scholar

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