Parallel superconducting strip-line detectors: reset behaviour in the single-strip switch regime

Casaburi, A. , Heath, R.M. , Tanner, M.G., Cristiano, R., Ejrnaes, M., Nappi, C. and Hadfield, R. (2014) Parallel superconducting strip-line detectors: reset behaviour in the single-strip switch regime. Superconductor Science and Technology, 27(4), 044029. (doi:10.1088/0953-2048/27/4/044029)

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Abstract

Superconducting strip-line detectors (SSLDs) are an important emerging technology for the detection of single molecules in time-of-flight mass spectrometry (TOF-MS). We present an experimental investigation of a SSLD laid out in a parallel configuration, designed to address selected single strip-lines operating in the single-strip switch regime. Fast laser pulses were tightly focused onto the device, allowing controllable nucleation of a resistive region at a specific location and study of the subsequent device response dynamics. We observed that in this regime, although the strip-line returns to the superconducting state after triggering, no effective recovery of the bias current occurs, in qualitative agreement with a phenomenological circuit simulation that we performed. Moreover, from theoretical considerations and by looking at the experimental pulse amplitude distribution histogram, we have the first confirmation of the fact that the phenomenological London model governs the current redistribution in these large area devices also after detection events.

Item Type:Articles
Additional Information:Supported by funding: EP/F048041/1.
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.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Superconductor Science and Technology
ISSN:0953-2048
ISSN (Online):1361-6668

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