Electromagnetic and microstructural properties of pure c-axis twist Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} bicrystal junctions

Technical Report · Sat Aug 01 04:00:00 EDT 1998

DOI:https://doi.org/10.2172/638226· OSTI ID:638226

Tsay, Y N; Li, Q; Zhu, Y; Suenaga, M ^[1]; Gu, G D; Koshizuka, N ^[2]

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1. Brookhaven National Lab., Upton, NY (United States). Dept. of Applied Science
2. ISTEC, Tokyo (Japan). Superconductivity Research Lab.

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}{minus}y{sup 2}}-wave order parameter for superconducting Bi2212.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 638226
• Report Number(s): BNL--65655; CONF-980731--; ON: DE98007199
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
EXPERIMENTAL DATA
GRAIN BOUNDARIES
HIGH-TC SUPERCONDUCTORS
JOSEPHSON EFFECT
MICROSTRUCTURE
ORDER PARAMETERS
STRONTIUM OXIDES