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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.42 [2004] >
IJPAP Vol.42(01) [January 2004] >
| Title: | Fe content variation and superconducting order parameter dimensionality in ErBa2Cu3-xFexO7- |
| Authors: | Upreti, U C |
| Keywords: | ErBa2Cu3-xFexO7- Superconducting order parameter High Tc superconductors |
| Issue Date: | Jan-2004 |
| Publisher: | CSIR |
| Abstract: | The effects of predominantly chain-site dopant, Fe, concentration
variation on superconducting order parameter fluctuations(SCOPF) in ErBa2Cu3-xFe
xO7- polycrystalline bulk samples are presented
and compared. A large reduction in OPD near the dynamic critical region is
seen, suggesting an anomalous crossover and indicating a much slower
suppression of superconductivity. Near to Tc the SCOPF behaviour
suggests Cu-O network coupling deterioration. It is also observed that the
SCOPF are invariant to Fe low concentrations and with Fe concentration increase
these show marked dimensionality variation and increased oxygen content
dependence. Higher Fe concentration is seen to promote a dimensionality
reversal. |
| Page(s): | 38-42 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.42(01) [January 2004]
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