SUPERCONDUCTIVITY AND ELECTRIC TRANSPORT OF BI2-YCUO6+DELTA SINGLE-CRYSTALS(XSR2)

Authors
HEJTMANEK J NEVRIVA M POLLERT E SEDMIDUBSKY D VASEK P
Citation
J. Hejtmanek et al., SUPERCONDUCTIVITY AND ELECTRIC TRANSPORT OF BI2-YCUO6+DELTA SINGLE-CRYSTALS(XSR2), Physica. C, Superconductivity, 264(3-4), 1996, pp. 220-226
Citations number
27
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
264
Issue
3-4
Year of publication
1996
Pages
220 - 226
Database
ISI
SICI code
0921-4534(1996)264:3-4<220:SAETOB>2.0.ZU;2-G
Abstract
A series of Bi2+xSr2-yCuO6+delta single crystals in the compositional range 0.11 < x < 0.4 and x = y was investigated by means of resistivit y, thermopower and Hall effect measurements. In order to elucidate the influence of the oxygen stoichiometry the studies were carried out su ccessively in the as-grown, oxygen and argon post-annealed crystals. T he superconductivity appears in an extremely narrow composition range, 0.11 < x < 0.15. This fact is discussed in the context of the doping level and charge carrier localization ascribed to bismuth ions which o ccupy the Sr sites partially.