期刊
PHYSICAL REVIEW B
卷 85, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.125137
关键词
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资金
- Partner University Fund (PUF)
- ICAM
- Swiss National Foundation
- Austrian Science Fund [F4103]
Recent angular-resolved photoemission experiments on LaNiO3 reported a renormalization of the Fermi velocity of e(g) quasiparticles, a kink in their dispersion at -0.2 eV and a large broadening and weakened dispersion of the occupied t(2g) states. We show here that all these features result from electronic correlations and are quantitatively reproduced by calculations combining density-functional theory and dynamical mean-field theory. The importance and general relevance of correlation effects in filled bands coupled by interorbital interactions to a partially filled band are pointed out.
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