CeFePO: f-d Hybridization and Quenching of Superconductivity
Abstract
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.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 2010
- DOI:
- 10.1103/PhysRevLett.104.096402
- arXiv:
- arXiv:1006.0583
- Bibcode:
- 2010PhRvL.104i6402H
- Keywords:
-
- 71.27.+a;
- Strongly correlated electron systems;
- heavy fermions;
- Condensed Matter - Superconductivity;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 5 pages, 3 figures