Current distribution in a parallel configuration superconducting strip-line detector

Casaburi, A. , Heath, R.M. , Tanner, M.G., Cristiano, R., Ejrnaes, M., Nappi, C. and Hadfield, R.H. (2013) Current distribution in a parallel configuration superconducting strip-line detector. Applied Physics Letters, 103(1), 013503. (doi:10.1063/1.4813087)

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Abstract

Superconducting detectors based on parallel microscopic strip-lines are promising candidates for single molecule detection in time-of-flight mass spectrometry. The device physics of this configuration is complex. In this letter, we employ nano-optical techniques to study the variation of current density, count rate, and pulse amplitude transversely across the parallel strip device. Using the phenomenological London theory, we are able to correlate our results to a non-uniform current distribution between the strips, governed by the London magnetic penetration depth. This fresh perspective convincingly explains anomalous behaviour in large area parallel superconducting strip-line detectors reported in previous studies.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hadfield, Professor Robert and Tanner, Dr Michael and Heath, Mr Robert and Casaburi, Dr Alessandro
Authors: Casaburi, A., Heath, R.M., Tanner, M.G., Cristiano, R., Ejrnaes, M., Nappi, C., and Hadfield, R.H.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Applied Physics Letters
ISSN:0003-6951
ISSN (Online):1077-3118
Copyright Holders:Copyright © 2013 AIP Publishing LLC
First Published:First published in Applied Physics Letters 103(1):013503
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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