JOSEPHSON TUNNELING AND GAP STRUCTURE IN Y1BA2CU3O7-Y OXIDE BARRIER PB PLANAR JUNCTIONS ON TETRAGONAL LASRGAO4 (100) SUBSTRATES

被引：8

作者：

WEN, Z ^{[1
]}

IGUCHI, I ^{[1
]}

NAKAMURA, K ^{[1
]}

机构：

[1] KOMATSU LTD,MAT LAB,HIRATSUKA,KANAGAWA 254,JAPAN

来源：

JOURNAL OF APPLIED PHYSICS | 1991年 / 69卷 / 10期

关键词：

D O I：

10.1063/1.347597

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Y1Ba2Cu3O7-y/oxide barrier/Pb thin film tunnel junctions are fabricated on the (100) plane of new tetragonal LaSrGaO4 single-crystal substrates by an in situ electron-beam deposition technique. Reproducible Josephson behavior is observed for all fabricated junctions. Above a Josephson critical current, a premature switching voltage of about 1 mV appears. The I-V curve under an applied magnetic field exhibits low-leakage quasiparticle tunneling characteristic. Modulation of Josephson critical current by the applied magnetic field yields a reversible Fraunhofer-like pattern against flux direction.

引用

页码：7363 / 7365

页数：3

共 8 条

[1] INSITU FABRICATION OF REPRODUCIBLE YBCO/AU PLANAR TUNNEL-JUNCTIONS WITH AN ARTIFICIAL MGO BARRIER [J].

FURUYAMA, M ;

IGUCHI, I ;

SHIRAI, K ;

KUSUMORI, T ;

OHTAKE, H ;

TOMURA, S ;

NASU, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1990, 29 (03) :L459-L462

[2] PROPERTIES OF YBCO-BASED TUNNEL-JUNCTIONS [J].

GAVALER, JR ;

FORRESTER, MG ;

TALVACCHIO, J .

PHYSICA C, 1989, 162 :1051-1052

[3] ELECTRON-TUNNELING INTO THIN-FILMS OF Y1BA2CU3O7 [J].

GEERK, J ;

XI, XX ;

LINKER, G .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1988, 73 (03) :329-336

[4] REPRODUCIBLE TUNNELING DATA ON CHEMICALLY ETCHED SINGLE-CRYSTALS OF YBA2CU3O7 [J].

GURVITCH, M ;

VALLES, JM ;

CUCOLO, AM ;

DYNES, RC ;

GARNO, JP ;

SCHNEEMEYER, LF ;

WASZCZAK, JV .

PHYSICAL REVIEW LETTERS, 1989, 63 (09) :1008-1011

[5]

IGUCHI I, 1990, PHYSICA B, V165, P73, DOI 10.1016/S0921-4526(90)80886-N

[6] TUNNELING CHARACTERISTICS OF YBACUO/MGO/PB PLANAR TUNNEL-JUNCTIONS AND OBSERVATION OF JOSEPHSON EFFECT [J].

IGUCHI, I ;

FURUYAMA, M ;

KUSUMORI, T ;

SHIRAI, K ;

TOMURA, S ;

NASU, M ;

OHTAKE, H .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1990, 29 (04) :L614-L617

[7] OBSERVATIONS OF QUASI-PARTICLE TUNNELING AND JOSEPHSON BEHAVIOR IN Y1BA2CU3O7-X/NATIVE BARRIER/PB THIN-FILM JUNCTIONS [J].

KWO, J ;

FULTON, TA ;

HONG, M ;

GAMMEL, PL .

APPLIED PHYSICS LETTERS, 1990, 56 (08) :788-790

[8] LOCALIZED NORMAL EXCITATIONS AND RESONANCE ANOMALIES ABOVE THE GAP IN TUNNELING CURRENT OF HIGH-TC SUPERCONDUCTORS [J].

TAKACS, S ;

BENACKA, S ;

PLECENIK, A ;

SVISTUNOV, VM .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1989, 162 :1049-1050

← 1 →