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)

Abstract

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
• Status: Published
• Refereed: Yes
• 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
• Publisher: IEEE
• ISSN: 1051-8223
• 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