DIRECT-CURRENT MAGNETRON-SPUTTERED IN2O3 FILMS AS TUNNEL BARRIERS

被引：47

作者：

KASIVISWANATHAN, S

RANGARAJAN, G

机构：

[1] Low Temperature Laboratory, Physics Department

来源：

JOURNAL OF APPLIED PHYSICS | 1994年 / 75卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.356231

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Insulating films of In2O3 were prepared by sputtering indium in the presence of pure oxygen using dc magnetron sputtering. Transmission electron microscopic investigations showed the films to be single phase and polycrystalline. Analysis of the optical transmittance data showed the films to have an optical band gap of 3.71 +/- 0.01 eV. Tunnel junctions were made with high T(c) superconductors Bi2Sr2Ca1Cu2Oy and NdBa2Cu3O7-delta using indium oxide as the barrier layer and Pb0.5In0.5 as the counter electrode. The conductance spectra displayed prominent structures attributable to energy gap. The reduced gap parameters for Bi2Sr2Ca1Cu2Oy and NdBa2Cu3O7-delta were found to be 4.0 +/- 0.5 and 5.2 +/- 0.6, respectively.

引用

收藏

页码：2572 / 2577

页数：6

相关论文

共 59 条

[1]

ALLEN R, 1992, J MATER RES, V1, P2936

[2] FLUORIDE BARRIERS IN NB/PB JOSEPHSON-JUNCTIONS [J].

ASANO, H ;

TANABE, K ;

MICHIKAMI, O ;

IGARASHI, M ;

BEASLEY, MR .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 1985, 24 (03) :289-292

[3] RF SPUTTER-DEPOSITED ALUMINUM-OXIDE FILMS AS HIGH-QUALITY ARTIFICIAL TUNNEL BARRIERS [J].

BARNER, JB ;

RUGGIERO, ST .

IEEE TRANSACTIONS ON MAGNETICS, 1987, 23 (02) :854-858

[4] ELECTRICAL AND OPTICAL-PROPERTIES OF AMORPHOUS INDIUM OXIDE [J].

BELLINGHAM, JR ;

PHILLIPS, WA ;

ADKINS, CJ .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (28) :6207-6221

[5] TUNNELING SPECTROSCOPY IN BI2SR2CACU2O8 - IS THE ENERGY-GAP ANISOTROPIC [J].

BRICENO, G ;

ZETTL, A .

SOLID STATE COMMUNICATIONS, 1989, 70 (11) :1055-1058

[6] TUNNELING SPECTROSCOPY ON BI2SR2CACU2O8+DELTA SINGLE-CRYSTALS AT T = 4.2 K [J].

BUSCHMANN, L ;

BOEKHOLT, M ;

GUNTHERODT, G .

PHYSICA C, 1992, 203 (1-2) :68-74

[7] PRELIMINARY-RESULTS ON TUNNEL-JUNCTIONS ON YBCO BULK WITH AN ARTIFICIAL BARRIER [J].

CAMERLINGO, C ;

CRISTIANO, R ;

RUSSO, M ;

SILVESTRINI, P .

PHYSICS LETTERS A, 1988, 128 (09) :508-512

[8] STUDY OF YBACUO ON W/SI BY X-RAY PHOTOELECTRON-SPECTROSCOPY [J].

CHOPRA, DR ;

CHOURASIA, AR ;

CHEN, L ;

BENSAOULA, AH ;

BENSAOULA, A .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1992, 10 (04) :1547-1553

[9] FAR-INFRARED SPECTROSCOPY OF RBA2CU3OX WITH VARIATIONS IN R AND X [J].

CRAWFORD, MK ;

FARNETH, WE ;

BORDIA, RK ;

MCCARRON, EM .

PHYSICAL REVIEW B, 1988, 37 (07) :3371-3374

[10] SUPERCONDUCTING PROPERTIES OF YBACUO/PB BULK JUNCTIONS BY TUNNEL SPECTROSCOPY [J].

CUCOLO, AM ;

PACE, S ;

VAGLIO, R ;

CAROTENUTO, M ;

NOBILE, G ;

DILEO, R ;

MATACOTTA, C ;

OLZI, E .

PHYSICA C, 1988, 153 :1375-1376

← 1 2 3 4 5 6 →