Slow Electron-Phonon Cooling in Superconducting Diamond Films

Nadezhda Titova; Anna I. Kardakova; Nina Tovpeko; Sergey Ryabchun; Soumen Mandal; Dmitry Morozov; Georgina M. Klemencic; Sean R. Giblin; Oliver A. Williams; Gregory N. Goltsman; T. M. Klapwijk

doi:10.1109/TASC.2016.2638199

Slow Electron-Phonon Cooling in Superconducting Diamond Films

Nadezhda Titova, Anna I. Kardakova, Nina Tovpeko, Sergey Ryabchun, Soumen Mandal, Dmitry Morozov, Georgina M. Klemencic, Sean R. Giblin, Oliver A. Williams, Gregory N. Goltsman, T. M. Klapwijk

QN/Kavli Nanolab Delft

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Abstract

We have measured the electron-phonon energy-relaxation time, τ_eph, 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 τ_eph 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.

Original language	English
Article number	7779132
Journal	IEEE Transactions on Applied Superconductivity
Volume	27
Issue number	4
DOIs	https://doi.org/10.1109/TASC.2016.2638199
Publication status	Published - 1 Jun 2017

Keywords

electron-phonon time
Superconducting boron-doped diamond
superconducting nanobolometers

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10.1109/TASC.2016.2638199

07779132Final published version, 172 KBLicence: CC BY

Cite this

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title = "Slow Electron-Phonon Cooling in Superconducting Diamond Films",

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.",

keywords = "electron-phonon time, Superconducting boron-doped diamond, superconducting nanobolometers",

author = "Nadezhda Titova and Kardakova, {Anna I.} and Nina Tovpeko and Sergey Ryabchun and Soumen Mandal and Dmitry Morozov and Klemencic, {Georgina M.} and Giblin, {Sean R.} and Williams, {Oliver A.} and Goltsman, {Gregory N.} and Klapwijk, {T. M.}",

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AU - Titova, Nadezhda

AU - Kardakova, Anna I.

AU - Tovpeko, Nina

AU - Ryabchun, Sergey

AU - Mandal, Soumen

AU - Morozov, Dmitry

AU - Klemencic, Georgina M.

AU - Giblin, Sean R.

AU - Williams, Oliver A.

AU - Goltsman, Gregory N.

AU - Klapwijk, T. M.

PY - 2017/6/1

Y1 - 2017/6/1

N2 - 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.

AB - 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.

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KW - superconducting nanobolometers

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Slow Electron-Phonon Cooling in Superconducting Diamond Films

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Keywords

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