Measurement of Electron Phonon Decoupling Time in Neutron-Transmutation Doped Germanium at 20 mK
We have studied the electron-phonon decoupling in Neutron-Transmutation Doped (NTD) Germanium thermistors below 50 mK, and measured a characteristic time constant of this phenomenon. We will discuss how our decoupling model accounts for observed non-linearities in I–V characteristics of NTD Ge and for the time structure of phonon pulses detected in a Ge crystal operated at 20 mK.
Aubourg, É., Cummings, A., Shutt, T., Stockwell, W., Barnes, P. D., Da Silva, A., Emes, J., Haller, E. E., Lange, A. E., Ross, R. R., Sadoulet, B., Smith, G., Wang, N., White, S., Young, B. A., & Yvon, D. (1993). Measurement of electron-phonon decoupling time in neutron-transmutation doped germanium at 20 mK. Journal of Low Temperature Physics, 93(3), 289–294. https://doi.org/10.1007/BF00693435