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Possible competitive electron- and hole-like conduction in the revived Nd1.82Ce0.18CuOy superconductors by Gunadhor S. Okram; B.D. Padalia; Om Prakash; S.K. Agarwal; A.V. Narlikar is a Physics and Astronomy article available to read on EtoBox.

What is Possible competitive electron- and hole-like conduction in the revived Nd1.82Ce0.18CuOy superconductors about?

Thermoelectric power (S) studies on the nominally electron-doped Ndl.82\_ z SrzCe0AsCuOy (NSCCO) superconductor system in the temperature range 35 K to 250 K are reported here. S of the reduced z = 0.09 sample has negative sign, indicating electron conduction, and has small magnitude, showing high metallicity. The sign of S for the z ~ 0.18 sample however shows a cross-over below 75 K, from negative to positive, conflicting perhaps with electronic conduction. This sample on oxygenation exhibits broadened positive peak and apparently gets carrier concentration enhanced. There is seemingly a competition between electron and hole-like conduction in these co-doped compounds also.

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Author

Gunadhor S. Okram; B.D. Padalia; Om Prakash; S.K. Agarwal; A.V. Narlikar

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-4534)

Published

1997

Language

EN

Field

Physics and Astronomy (Physical Sciences)