Spatial inhomogeneities in the energy response of a tunnel junction detector due to penetration of Abrikosov vortices

被引：2

作者：

leGrand, JB

Martin, J

Gross, R

Huebener, RP

Hamster, AW

Brons, GCS

Adelerhof, DJ

Flokstra, J

deKorte, PAJ

机构：

[1] UNIV TWENTE,DEPT APPL PHYS,7500 AE ENSCHEDE,NETHERLANDS

[2] SPACE RES ORG NETHERLANDS,3584 CA UTRECHT,NETHERLANDS

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1996年 / 370卷 / 01期

关键词：

D O I：

10.1016/0168-9002(95)01116-1

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

For the application of superconductive tunnel junctions (STJs) as high resolution X-ray detectors the homogeneity of the detector response is of utmost importance. In this article it is shown how this homogeneity is degraded by the penetration of Abrikosov vortices (AVs) into the junction electrodes. These AVs may exist because of small misalignments in the parallel magnetic field, which is applied to suppress the Josephson current and Fiske steps. By means of Low Temperature Scanning Electron Microscopy (LTSEM) the response of the tunnel junction to local energy deposition is mapped and found to be reduced in areas where AVs are present. On the basis of these experiments the threshold perpendicular field at which vortices start to penetrate the junction is derived.

引用

页码：131 / 132

页数：2