Abstract
Synchrotron radiation has been used to investigate resonant photoemission in the amorphous metal systems CuTi, CuZr and CuHf. Constant initial state spectra reveal resonant enhancement at np → nd photon excitation energies of conduction band states near the Fermi level; these are Ti3d-like states in CuTi, Zr4d-like states in CuZr, and Hf5d-like states in CuHf. In contrast there is an absence of such resonance effects in a lower lying “filled” Cu3d-like band. The results are consistent with CuTi, CuZr and CuHf all exhibiting split band behaviour, with little hybridisation between Cu3d and transition metal nd states.
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