Phys. Rev. Lett. 104, 096402 (2010) [4 pages]CeFePO: f-d Hybridization and Quenching of SuperconductivityReceived 8 December 2009; published 5 March 2010 As a homologue to the new, Fe-based type of high-temperature superconductors, the electronic structure of the heavy-fermion compound CeFePO was studied by means of angle-resolved resonant photoemission. It was experimentally found—and later on confirmed by local-density approximation (LDA) as well as dynamical mean-field theory (DMFT) calculations—that the Ce 4f states hybridize to the Fe 3d states of d3z2-r2 symmetry near the Fermi level that discloses their participation in the occurring electron-correlation phenomena and provides insight into mechanism of superconductivity in oxopnictides. © 2010 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.104.096402
DOI:
10.1103/PhysRevLett.104.096402
PACS:
71.27.+a
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