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DOI码：10.1103/PhysRevB.102.035111

发表刊物：Physical Review B

摘要：We report angle-resolved photoemission spectroscopy and first-principles numerical calculations for the band-structure evolution of the 3⁢�� heavy-fermion compound CaC⁢u3⁢R⁢u4⁢O12. Below ��∼200 K, we observed an emergent hybridization gap between the Cu 3d-electron-like band and the Ru 4d-hole-like band and the resulting flat band features near the Fermi level centered around the Brillouin-zone corner. Our results confirm the non-Kondo nature of the CaC⁢u3⁢R⁢u4⁢O12, in which the Cu3⁢��xy electrons are less correlated and not in the Kondo limit. Comparison between theory and experiment also suggests that other mechanisms may be needed to give a full quantitative explanation of the peculiar properties in this material.

论文类型：期刊论文

是否译文：否

发表时间：2020-01-01

发布期刊链接：https://journals.aps.org/prb/abstract/10.1103/PhysRevB.102.035111