STUDY OF AMORPHOUS SUPERCONDUCTING TRANSITION METAL-METALLOID ALLOYS PRODUCED BY CO-EVAPORATION

被引：26

作者：

JOHNSON, WL ^{[1
]}

TSUEI, CC ^{[1
]}

RAIDER, SI ^{[1
]}

LAIBOWITZ, RB ^{[1
]}

机构：

[1] IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598

来源：

JOURNAL OF APPLIED PHYSICS | 1979年 / 50卷 / 06期

关键词：

D O I：

10.1063/1.326456

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The structure and superconductivity of several niobium and molybdenum-base superconducting alloys obtained by coevaporation were studied. The formation of an amorphous phase is shown to depend on both alloy composition and substrate temperature in a systematic way. The variation of the superconducting transition temperature with alloy composition is compared for amorphous and crystalline forms of the same alloy composition, and the factors which govern superconductivity are discussed. Results of superconductive tunneling experiments involving amorphous molybdenum-base alloys show a ratio of energy gap to transition temperature of about 3.5. These results are presented as evidence that these amorphous alloys are weak-coupling superconductors.

引用

页码：4240 / 4245

页数：6

共 14 条

[1]

Bergmann G., 1976, Physics Reports. Physics Letters Section C, V27c, P159, DOI 10.1016/0370-1573(76)90040-5

[2] EINFLUSS DER KONDENSATION BEI TIEFEN TEMPERATUREN AUF DEN ELEKTRISCHEN WIDERSTAND UND DIE SUPRALEITUNG FUR VERSCHIEDENE METALLE [J].

BUCKEL, W ;

HILSCH, R .

ZEITSCHRIFT FUR PHYSIK, 1954, 138 (02) :109-120

[3] SUPRALEITUNG UND ELEKTRISCHER WIDERSTAND NEUARTIGER ZINN-WISMUT-LEGIERUNGEN [J].

BUCKEL, W ;

HILSCH, R .

ZEITSCHRIFT FUR PHYSIK, 1956, 146 (01) :27-38

[4] AMORPHOUS-GE ALLOY-FILMS .2. TRANSPORT PROPERTIES [J].

CHOPRA, KL ;

NATH, P .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1976, 33 (01) :333-344

[5] SUPERCONDUCTIVITY IN AMORPHOUS TRANSITION-METAL ALLOY FILMS [J].

COLLVER, MM ;

HAMMOND, RH .

PHYSICAL REVIEW LETTERS, 1973, 30 (03) :92-95

[6] SUPERCONDUCTING TRANSITION-TEMPERATURE, ENERGY-GAP AND RESISTANCE BEHAVIOR OF AMORPHOUS AND CRYSTALLINE THALLIUM-TELLURIUM-FILMS [J].

COMBERG, A ;

EWERT, S .

ZEITSCHRIFT FUR PHYSIK, 1974, 268 (02) :241-244

[7]

GOLDING B, 1972, PHYS REV LETT, V29, P68, DOI 10.1103/PhysRevLett.29.68

[8] RATIO BETWEEN ENERGY-GAP AND TRANSITION-TEMPERATURE IN ULTRATHIN SUPERCONDUCTING FILMS [J].

GRANQVIS.CG ;

CLAESON, T .

PHYSICS LETTERS A, 1973, A 45 (06) :431-432

[9] Electron Tunneling into Disordered Thin Films [J].

Knorr, K. ;

Barth, N. .

JOURNAL OF LOW TEMPERATURE PHYSICS, 1971, 4 (05) :469-484

[10] VALIDITY OF BRAGGS RULE IN SPUTTERED SUPERCONDUCTING NBN AND NBC FILMS OF VARIOUS COMPOSITIONS [J].

MEYER, O ;

LINKER, G ;

KRAEFT, B .

THIN SOLID FILMS, 1973, 19 (02) :217-226

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