SPECIFIC-HEAT OF A SUPERCONDUCTING MULTILAYER - 2D FLUCTUATIONS AND 2D-0D CROSSOVER

被引：26

作者：

URBACH, JS

WHITE, WR

BEASLEY, MR

KAPITULNIK, A

机构：

[1] Department of Applied Physics, Stanford University, Stanford

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.69.2407

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the specific heat of multilayers of superconducting amorphous Mo77Ge23 layers separated by insulating amorphous germanium. We observe a fluctuation regime in quantitative agreement with predictions for two-dimensional superconductivity. The fluctuation peak is rapidly suppressed by the application of small magnetic fields perpendicular to the layers, and the transition becomes extremely broad as the field is increased. The transition widths scale as expected for a field-induced 2D to 0D crossover, and are in excellent agreement with the exact result for 0D fluctuations.

引用

页码：2407 / 2410

页数：4

共 20 条

[1] SUPERCONDUCTIVITY IN TWO-DIMENSIONAL DISORDERED THIN-FILMS [J].