EVIDENCE FOR SINGLE-ION SPECTRAL RESPONSE FROM A STRONGLY HYBRIDIZED ANDERSON-LATTICE - CERH2

We report measurements of the low-temperature ground-state (F-2(5/2)) paramagnetic spectral response of the compounds CeRh2 and Ce(Rh0.73Pt0 .27)(2) Both compounds show broad lorentzian-like, single-ion spectral response with characteristic energies of similar to 114 (+/- 8) and s imilar to 63 (+/- 5) meV, respectively. The lower magnitude of the cha racteristic energy for the Pt-doped sample is consistent with the prog ressive evolution towards the stable valent (i.e. low T-K) state of Ce with increasing Pt content x in the pseudo-binary Ce(Rh1-xPtx)(2). Fe rmi-liquid relations indicate that the characteristic energies T-K for both compounds are consistent with the linear specific heat coefficie nt gamma and, to a lesser extent, the low-temperature susceptibility c hi(0).