Anomalous field effect in ultrathin films of metals near the superconductor-insulator transition

被引：74

作者：

MartinezArizala, G ^{[1
]}

Grupp, DE ^{[1
]}

Christiansen, C ^{[1
]}

Mack, AM ^{[1
]}

Markovic, N ^{[1
]}

Seguchi, Y ^{[1
]}

Goldman, AM ^{[1
]}

机构：

[1] KINKI UNIV,FAC SCI & TECHNOL,OSAKA,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.78.1130

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A field effect conductance modulation experiment has been performed on a series of nominally homogeneous ultrathin films of metals. The thicknesses of the films were varied over a range such that their properties traversed the insulator-to-superconductor transition. At low gate voltages V-G the conductance G(V-G) increased with either polarity for films on the insulating side of the transition and decreased at temperatures in the transition region for films which were just thick enough to be superconducting. A qualitative interpretation of these results suggests the consideration of Cooper pairing even for insulating films.

引用

页码：1130 / 1133

页数：4

共 34 条

[1] POTENTIAL DISORDER IN GRANULAR METAL SYSTEMS - THE FIELD-EFFECT IN DISCONTINUOUS METAL-FILMS [J].