Comment on 'Relaxation-Time Enhancement in the Heavy-Fermion Systems' CePd sub 3.
01 January 1989
In three recent publications microwave surface resistance measurements have been reported for CePd sub 3 and UPt sub 3. An approximate formula was used to extract a renormalized scattering time tau sup * from these data. An exact analysis, given below, reveals that the approximation breaks down in the region of interest so that the reported results cannot be identified with a renormalized scattering time.