Abstract
Break-junction measurements on Ce2Fe17 have been carried out for the first time. The differential conductance exhibits the gap feature associated with the antiferromagnetic state below TN1 = 125 K. The gap magnitude of 2Δ = 13-16 meV at 4.2 K corresponds to 1.2 - 1.5 kBTN1, which is considerably smaller than the mean-field prediction. We also observed distinct conductance structures at higher bias voltages. Their possible origins are briefly discussed.
