Slow electron–phonon cooling in superconducting diamond films

Titova, N. et al. (2017) Slow electron–phonon cooling in superconducting diamond films. IEEE Transactions on Applied Superconductivity, 27(4), 7501104. (doi: 10.1109/TASC.2016.2638199)

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We have measured the electron-phonon energy-relaxation time, τeph, in superconducting boron-doped diamond films grown on silicon substrate by chemical vapor deposition. The observed electron-phonon cooling times vary from 160 ns at 2.70 K to 410 ns at 1.8 K following a T -2-dependence. The data are consistent with the values of τeph previously reported for single-crystal boron-doped diamond films epitaxially grown on diamond substrate. Such a noticeable slow electron-phonon relaxation in boron-doped diamond, in combination with a high normal-state resistivity, confirms a potential of superconducting diamond for ultrasensitive superconducting bolometers.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Morozov, Dr Dmitry
Authors: Titova, N., Kardakova, A. I., Tovpeko, N., Ryabchun, S., Mandal, S., Morozov, D., Klemencic, G. M., Giblin, S. R., Williams, O. A., Goltsman, G. N., and Klapwijk, T. M.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Transactions on Applied Superconductivity
ISSN (Online):1558-2515
Published Online:09 December 2016
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in IEEE Transactions on Applied Superconductivity 27(4): 7501104
Publisher Policy:Reproduced under a Creative Commons License

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