TUNNELING INTO GRANULAR PH FILMS IN THE SUPERCONDUCTING AND INSULATING REGIMES

被引：50

作者：

BARBER, RP

MERCHANT, LM

LAPORTA, A

DYNES, RC

机构：

[1] Department of Physics, University of California, San Diego

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.49.3409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tunnelling measurements have been performed on both sides of the insulator-superconductor transition in quench-condensed granular Pb films. The results indicate that the Pb film consists of fully superconducting grains with essentially bulk values for the superconducting energy gap Delta and transition temperature T-c, even when the film exhibits insulating behavior in transport measurements. The density of states inferred from measurements in perpendicular magnetic field are consistent with magnetic spin-flip broadening.

引用

收藏

页码：3409 / 3412

页数：4

相关论文

共 13 条

[1] THEORY OF THERMAL CONDUCTIVITY OF SUPERCONDUCTING ALLOYS WITH PARAMAGNETIC IMPURITIES [J].

AMBEGAOKAR, V ;

GRIFFIN, A .

PHYSICAL REVIEW, 1965, 137 (4A) :1151-+

[2] LOW-FIELD MAGNETORESISTANCE IN GRANULAR PB FILMS NEAR THE INSULATOR-SUPERCONDUCTOR TRANSITION [J].

BARBER, RP ;

DYNES, RC .

PHYSICAL REVIEW B, 1993, 48 (14) :10618-10621

[3] HYPERRESISTIVITY TO GLOBAL-SUPERCONDUCTIVITY TRANSITION BY ANNEALING IN QUENCH-CONDENSED PB FILMS [J].

BARBER, RP ;

GLOVER, RE .

PHYSICAL REVIEW B, 1990, 42 (10) :6754-6757

[4]

CARBOTTE JP, COMMUNICATION

[5] 2-DIMENSIONAL ELECTRICAL-CONDUCTIVITY IN QUENCH-CONDENSED METAL-FILMS [J].

DYNES, RC ;

GARNO, JP ;

ROWELL, JM .

PHYSICAL REVIEW LETTERS, 1978, 40 (07) :479-482

[6] DIRECT MEASUREMENT OF QUASIPARTICLE-LIFETIME BROADENING IN A STRONG-COUPLED SUPERCONDUCTOR [J].

DYNES, RC ;

NARAYANAMURTI, V ;

GARNO, JP .

PHYSICAL REVIEW LETTERS, 1978, 41 (21) :1509-1512

[7] MAGNETIC-FIELD-INDUCED PAIR-BREAKING EFFECTS IN GRANULAR PB FILMS NEAR THE SUPERCONDUCTOR-TO-INSULATOR TRANSITION [J].

HSU, SY ;

VALLES, JM .

PHYSICAL REVIEW B, 1993, 48 (06) :4164-4167

[8] ONSET OF SUPERCONDUCTIVITY IN ULTRATHIN GRANULAR METAL-FILMS [J].

JAEGER, HM ;

HAVILAND, DB ;

ORR, BG ;

GOLDMAN, AM .

PHYSICAL REVIEW B, 1989, 40 (01) :182-196

[9]

LAPORTA A, UNPUB

[10] PROPERTIES OF SUPERCONDUCTING ALLOYS CONTAINING PARAMAGNETIC IMPURITIES [J].

SKALSKI, S ;

BETBEDER.O ;

WEISS, PR .

PHYSICAL REVIEW, 1964, 136 (6A) :1500-+