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Angular dependence of the symmetry of the order parameter in YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta//.
- Source :
-
IEEE Transactions on Applied Superconductivity . 1997, Vol. 7 Issue 2, p2331-2334. 4p. - Publication Year :
- 1997
-
Abstract
- Using a 4.2 K scanning SQUID microscope, we examined twinned thin-film YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// (YBCO)-Ag-PbIn SQUIDs and measured the phase of the order parameter in the YBCO for 13 different tunneling angles. We have found that the order parameter in YBCO is time-reversal symmetric and shows a d(x/sup 2/-y/sup 2/)-pairing symmetry, provided the junctions are properly made. Detailed analysis of our data reveals that any time-reversal breaking component is less than 5%, which rules out states such as d(x/sup 2/-y/sup 2/)+ is or d(x/sup 2/-y/sup 2/)+ id/sub xy/. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 10518223
- Volume :
- 7
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Applied Superconductivity
- Publication Type :
- Academic Journal
- Accession number :
- 93047291
- Full Text :
- https://doi.org/10.1109/77.621706