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Thin-Film Thermal Conductivity Measurements Using Superconducting Nanowires

Allmaras, J. P. and Kozorezov, A. G. and Beyer, A. D. and Marsili, F. and Briggs, R. M. and Shaw, M. D. (2018) Thin-Film Thermal Conductivity Measurements Using Superconducting Nanowires. Journal of Low Temperature Physics, 193 (3-4). pp. 380-386. ISSN 0022-2291.

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We present a simple experimental scheme for estimating the cryogenic thermal transport properties of thin films using superconducting nanowires. In a parallel array of nanowires, the heat from one nanowire in the normal state changes the local temperature around adjacent nanowires, reducing their switching current. Calibration of this change in switching current as a function of bath temperature provides an estimate of the temperature as a function of displacement from the heater. This provides a method of determining the contribution of substrate heat transport to the cooling time of superconducting nanowire single-photon detectors. Understanding this process is necessary for successful electrothermal modeling of superconducting nanowire systems.

Item Type:Article
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URLURL TypeDescription ReadCube access
Allmaras, J. P.0000-0001-9621-289X
Additional Information:© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2018. Received: 7 November 2017 / Accepted: 3 July 2018. This work was supported by a NASA Space Technology Research Fellowship (Grant No. NNX16AM54H). AGK, FM, and MDS acknowledge financial support from DARPA. This work was carried out at the Jet Propulsion Laboratory under contract with the National Aeronautics and Space Administration.
Funding AgencyGrant Number
NASA Space Technology Research FellowshipNNX16AM54H
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Record Number:CaltechAUTHORS:20180730-105755324
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Official Citation:Allmaras, J.P., Kozorezov, A.G., Beyer, A.D. et al. J Low Temp Phys (2018) 193: 380.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88354
Deposited By: George Porter
Deposited On:30 Jul 2018 18:18
Last Modified:13 Oct 2018 02:53

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