Hysteretic Current–Voltage Characteristics for a-Axis Oriented Grain in Y 1 Ba 2 Cu 3 O 7-δ Films

Hysteretic Current–Voltage Characteristics for a-Axis Oriented Grain in Y 1 Ba 2 Cu 3 O 7-δ Films

We observed a hysteretic current–voltage ( I–V ) characteristic on lateral type intrinsic Josephson junction using Y 1 Ba 2 Cu 3 O 7-δ films. An a -axis oriented needle-like grain surrounded by c -axis oriented grains is used for the junctions. The junctions using as-grown films show resistively shu...

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Veröffentlicht in:Japanese Journal of Applied Physics 1997-12, Vol.36 (12R), p.7173
Hauptverfasser: Yoshihiro Ishimaru, Yoshihiro Ishimaru, Youichi Enomoto, Youichi Enomoto
Format: Artikel
Sprache:eng
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Zusammenfassung:We observed a hysteretic current–voltage ( I–V ) characteristic on lateral type intrinsic Josephson junction using Y 1 Ba 2 Cu 3 O 7-δ films. An a -axis oriented needle-like grain surrounded by c -axis oriented grains is used for the junctions. The junctions using as-grown films show resistively shunted junction (RSJ) type I–V characteristics. After appropriate annealing in pure Ar-gas, this junction property changes to hysteretic I–V characteristics with several voltage jumps from no hysteresis. It is explained that conductivity of the CuO chain decreases by the annealing.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.36.7173