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|Title: ||Possible competitive electron- and hole-like conduction in the revived Nd1.82Ce0.18CuOy superconductors|
|Authors: ||OKRAM, GS|
|Issue Date: ||1997|
|Publisher: ||ELSEVIER SCIENCE BV|
|Citation: ||PHYSICA C, 277(1-2), 19-23|
|Abstract: ||Thermoelectric power (S) studies on the nominally electron-doped Nd1.82-zSrzCe0.18CuOy (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.|
|Appears in Collections:||Article|
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