PHOTON-ASSISTED VORTEX DEPAIRING IN 2-DIMENSIONAL SUPERCONDUCTORS

被引：38

作者：

KADIN, AM ^{[1
]}

LEUNG, M ^{[1
]}

SMITH, AD ^{[1
]}

机构：

[1] TRW CO INC,SPACE & TECHNOL GRP,REDONDO BEACH,CA 90278

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.65.3193

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a novel quantum detection mechanism for photon absorption in a two-dimensional superconductor that exhibits a vortex-unbinding transition. Well below the transition, absorption of a single photon of energy hf can result in the creation of a vortex-antivortex pair, which can be broken apart in an applied current, thus transferring a single flux quantum 0 across the film. This results in a quantum-limited voltage responsivity 0/hf=1/2ef, and may account for some reports of enhanced nonbolometric detection of infrared radiation in thin granular superconducting films. © 1990 The American Physical Society.

引用

页码：3193 / 3196

页数：4

共 17 条

[1] SUBMILLIMETER DETECTOR OPERATION OF GRANULAR SUPERCONDUCTING NBN FILMS [J].