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An anomalous dip in thermoelectric power of Nd1-xPrxBa2Cu3O7-delta
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
2003 (English)In: Physica. C, Superconductivity, ISSN 0921-4534, E-ISSN 1873-2143, Vol. 388, 351-352 p.Article in journal (Refereed) Published
Abstract [en]

The thermoelectric power, S, has been studied for sintered samples of Nd1-xPrxBa2Cu3O7-delta with 0 less than or equal to x less than or equal to 0.30 in the temperature range from the superconducting T-c to room temperature. S increases with decreasing temperature,and has a broad maximum at T-max in the region around 120 K before decreasing strongly when T-e is approached. Several properties indicate a decrease of charge concentration with increasing doping, x, from S(x, 290 K), T-max, and the resistivity rho(x, 290 K). An anomaly has been observed in S(T) for x greater than or equal to 0.20 in the form of a dip at 78 K of order 15% of S. The origin of this feature is not known.

Place, publisher, year, edition, pages
2003. Vol. 388, 351-352 p.
Keyword [en]
superconductivity, thermoelectric power, Pr doping, superconductivity suppression, prba2cu3o7
Identifiers
URN: urn:nbn:se:kth:diva-22558ISI: 000183340300169OAI: oai:DiVA.org:kth-22558DiVA: diva2:341256
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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