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ELECTROMAGNETIC AND MICROSTRUCTURAL PROPERTIES OF PURE C-AXIS TWIST Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} BICRYSTAL JUNCTIONS

Conference ·
OSTI ID:757121
Bulk Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} (Bi2212) bicrystals containing a single high quality [001] twist grain boundary junction were prepared in order to investigate the orbital symmetry of the superconducting order parameter in highly anisotropic Bi-based high temperature superconductors. The misorientation angles of the bicrystals ranged from 0 to 180{degree}. The microstructure in the vicinity of the junction was characterized using high-resolution, nano-probe analytical microscopy. The authors found that some high angle twist junctions were able to carry a critical current density similar to their constituent single crystals. These results cannot be interpreted in terms of a pure d{sub x{sup 2}-y{sup 2}}-wave order parameter for superconducting Bi2212.
Research Organization:
Brookhaven National Lab., Upton, NY (US)
Sponsoring Organization:
USDOE Office of Energy Research (ER) (US)
DOE Contract Number:
AC02-98CH10886
OSTI ID:
757121
Report Number(s):
BNL--65655; KC02010300; KC02010300
Country of Publication:
United States
Language:
English