Transport properties of bicrystal Josephson junctions in Y-Ba-Cu-O films grown by liquid phase epitaxy

We studied charge transport across 24/spl deg/, 36/spl deg/, 45/spl deg/ symmetrical and 45/spl deg/ asymmetrical grain boundaries (GB's) in YBCO bicrystals grown by liquid phase epitaxy (LPE). We show that transport properties of symmetrical GB's are similar to those in bicrystals formed...

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Veröffentlicht in:	IEEE transactions on applied superconductivity 2001-03, Vol.11 (1), p.3784-3787
Hauptverfasser:	Eltsev, Y.F., Nakao, K., Yamada, Y., Hirabayashi, I., Ishimaru, Y., Tanabe, K., Enomoto, Y., Wen, J., Koshizuka, N.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Asymmetry Atherosclerosis BICRYSTALS Charge transport Chemical vapor deposition Condensed matter: electronic structure, electrical, magnetic, and optical properties CRYSTAL GROWTH Cuprates superconductors (high tc and insulating parent compounds) DEPOSITION Electronics Epitaxial growth EPITAXY Exact sciences and technology Grain boundaries Josephson junctions Laboratories Liquid phase epitaxy Microstructure PHYSICAL VAPOR DEPOSITION Physics PROPERTIES Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Superconducting devices SUPERCONDUCTIVITY SUPERCONDUCTORS Telephony Transport properties VAPOR DEPOSITION Y-based cuprates YBCO superconductors Yttrium barium copper oxide YTTRIUM OXIDE
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Zusammenfassung:	We studied charge transport across 24/spl deg/, 36/spl deg/, 45/spl deg/ symmetrical and 45/spl deg/ asymmetrical grain boundaries (GB's) in YBCO bicrystals grown by liquid phase epitaxy (LPE). We show that transport properties of symmetrical GB's are similar to those in bicrystals formed by various physical vapour deposition (PVD) methods while for 45/spl deg/ asymmetrical GB's, a difference between transport properties of LPE and PVD bicrystals has been found. In particular, in contrast to PVD bicrystals, selected LPE samples demonstrate regular magnetic interference patterns. In an agreement with transmission electron microscopy data, this result suggests better quality of 45/spl deg/ asymmetrical GB's in LPE films.
ISSN:	1051-8223 1558-2515
DOI:	10.1109/77.919888