H. Pothier et al., ENERGY-DISTRIBUTION OF ELECTRONS IN AN OUT-OF-EQUILIBRIUM METALLIC WIRE (VOL 103, PG 313, 1997), Zeitschrift fur Physik. B, Condensed matter, 104(1), 1997, pp. 178-182
We have measured with a tunnel probe the energy distribution function
of quasiparticles in the middle of a 1.5 mu m-long copper wire placed
between two reservoirs at different potentials. We find a distribution
function close to half the sum of the Fermi distributions in the rese
rvoirs. The deviation from this behavior is not yet understood.