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Self-heating hotspots in superconducting nanowires cooled by phonon black-body radiation

Dane, Andrew E. and Allmaras, Jason P. and Zhu, Di and Onen, Murat and Colangelo, Marco and Baghdadi, Reza and Tambasco, Jean-Luc and Morimoto, Yukimi and Estay Forno, Ignacio and Charaev, Ilya and Zhao, Qingyuan and Skvortsov, Mikhail and Kozorezov, Alexander G. and Berggren, Karl K. (2022) Self-heating hotspots in superconducting nanowires cooled by phonon black-body radiation. Nature Communications, 13 . Art. No. 5429. ISSN 2041-1723. doi:10.1038/s41467-022-32719-w.

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Controlling thermal transport is important for a range of devices and technologies, from phase change memories to next-generation electronics. This is especially true in nano-scale devices where thermal transport is altered by the influence of surfaces and changes in dimensionality. In superconducting nanowire single-photon detectors, the thermal boundary conductance between the nanowire and the substrate it is fabricated on influences all of the performance metrics that make these detectors attractive for applications. This includes the maximum count rate, latency, jitter, and quantum efficiency. Despite its importance, the study of thermal boundary conductance in superconducting nanowire devices has not been done systematically, primarily due to the lack of a straightforward characterization method. Here, we show that simple electrical measurements can be used to estimate the thermal boundary conductance between nanowires and substrates and that these measurements agree with acoustic mismatch theory across a variety of substrates. Numerical simulations allow us to refine our understanding, however, open questions remain. This work should enable thermal engineering in superconducting nanowire electronics and cryogenic detectors for improved device performance.

Item Type:Article
Related URLs:
URLURL TypeDescription ReadCube access
Dane, Andrew E.0000-0003-2480-767X
Allmaras, Jason P.0000-0001-9621-289X
Zhu, Di0000-0003-0210-1860
Colangelo, Marco0000-0001-7611-0351
Tambasco, Jean-Luc0000-0002-7673-8154
Morimoto, Yukimi0000-0002-9959-9775
Charaev, Ilya0000-0002-4036-0778
Skvortsov, Mikhail0000-0002-3572-475X
Kozorezov, Alexander G.0000-0002-3609-3902
Berggren, Karl K.0000-0001-7453-9031
Additional Information:This work was supported by the DARPA Detect Project, grant no. DARPA ARO W911NF1620192. A.D. and J.A. were each supported by a NASA Space technology research fellowship, grant no’s NNX14AL48H and NNX16AM54H respectively. D.Z. was supported by an A*STAR National Science Scholarship. The authors would like to thank Jim Daley and Mark Mondol who enabled our use of the Nanostructures Laboratory at MIT where the majority of the sample fabrication took place. We would also like to thank Donnie Keathley and Navid Abedzadeh for their help reviewing drafts of this manuscript, as well as all other members of the Quantum Nanostructures and Nanofabrication Group at MIT. Terry Orlando and Harvey Moseley provided invaluable feedback on this work.
Funding AgencyGrant Number
Advanced Research Projects Agency (ARPA)W911NF1620192
NASA Space Technology Research FellowshipNNX14AL48H
NASA Space Technology Research FellowshipNNX16AM54H
Agency for Science, Technology and Research (A*STAR)UNSPECIFIED
Record Number:CaltechAUTHORS:20220928-285212100.10
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:117166
Deposited By: Melissa Ray
Deposited On:03 Oct 2022 22:15
Last Modified:03 Oct 2022 22:15

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