Selected Publications

Strain enhanced electron cooling in a degenerately doped semiconductor

M.J. Prest, J.T. Muhonen, M. Prunnila, D. Gunnarsson, V A. Shah, J.S. Richardson-Bullock, A. Dobbie, M. Myronov, R.J.H. Morris, T.E. Whall, E.H.C. Parker, D.R. Leadley

We demonstrate significant modification of the electron-phonon energy loss rate in a many-valley semiconductor system due to lattice mismatch induced strain. We show that the thermal conductance from the electron system to the phonon bath in strained n + Si, at phonon temperatures between 200 mK and 450 mK, is more than an order of magnitude lower than that for a similar unstrained sample.

Applied Physics Letters 99, 251908 (2011)

doi: 10.1063/1.3670330