PT Journal
AU Titova, N
   Kardakova, AI
   Tovpeko, N
   Ryabchun, S
   Mandal, S
   Morozov, D
   Klemencic, GM
   Giblin, SR
   Williams, OA
   Goltsman, GN
   Klapwijk, TM
TI Slow electron–phonon cooling in superconducting diamond films
SO IEEE Trans. Appl. Supercond.
JI IEEE Trans. Appl. Supercond.
PY 2017
BP 1
EP 4
VL 27
IS 4
DI 10.1109/TASC.2016.2638199
DE superconducting diamond films; electron-phonon cooling
AB 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.
ER