REPRODUCIBLE TUNNELING CHARACTERISTICS AND ZERO-BIAS ANOMALIES IN Y-BA-CU-O TUNNEL-JUNCTIONS

被引：6

作者：

CUCOLO, AM ^{[1
]}

DILEO, R ^{[1
]}

LICCI, F ^{[1
]}

机构：

[1] CNR,MASPEC,I-43100 PARMA,ITALY

来源：

PHYSICA C | 1992年 / 192卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90832-W

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated interfaces between chemically etched YBa2Cu3O7-delta single crystals and evaporated thin films of different materials by means of planar tunnel junctions with natural barriers. We have found that reproducible tunneling characteristics are obtained with Au, Bi and Sb counterelectrodes. Evidence for the local T(c) of the Y-Ba-Cu-O compound is observed in these junctions. Less pronounced structures are found in the case of Sn counterelectrodes while Ag and Al junctions develop a large resistance peak at zero bias and low temperatures.

引用

页码：279 / 283

页数：5

共 25 条

[1] LOW LEAKAGE TUNNEL-JUNCTIONS ON LIQUID ETCHED THIN-FILMS OF Y1BA2CU3O7 [J].

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[2] PLANAR TUNNEL-JUNCTIONS ON 90-K AND 60-K YBCO SINGLE-CRYSTALS - SUPERCONDUCTING AND NORMAL STATE PROPERTIES [J].

CUCOLO, AM ;

DYNES, RC ;

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PHYSICA C, 1991, 179 (1-3) :69-74

[3] YBCO/PB TUNNEL-JUNCTIONS - REPRODUCIBILITY, CYCLABILITY AND ROLE OF THE OXYGEN-CONTENT AT THE YBCO SURFACE [J].

CUCOLO, AM ;

DILEO, R ;

ROMANO, P ;

SCHNEEMEYER, LF ;

WASZCZAK, JV .

IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (02) :1349-1352

[4] INFLUENCE OF THE OXYGEN-CONTENT ON THE TUNNELING CHARACTERISTICS OF YBA2CU3O7-DELTA [J].

CUCOLO, AM ;

DILEO, R ;

ROMANO, P ;

SCHNEEMEYER, LF ;

WASZCZAK, JV .

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[5]

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[6]

DYNES RC, UNPUB

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

GEERK, J ;

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LINKER, G .

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[9] REPRODUCIBILITY IN TUNNELING ACHIEVED THROUGH LIQUID ETCHING OF YBCO [J].

GURVITCH, M ;

VALLES, JM ;

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CUCOLO, AM ;

SCHNEEMEYER, LF .

PHYSICA C, 1989, 162 :1067-1068

[10] 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

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