Stability of the Zhang-Rice Singlet with Doping in Lanthanum Strontium Copper Oxide Across the Superconducting Dome and above

N. B. Brookes*, G. Ghiringhelli, A. M. Charvet, A. Fujimori, T. Kakeshita, H. Eisaki, S. Uchida, T. Mizokawa

*この研究の対応する著者

研究成果: Article査読

16 被引用数 (Scopus)

抄録

The spin character of the states at the top of the valence band in doped La2-xSrxCuO4 (x=0.03, 0.07, 0.15, 0.22, and 0.30) has been investigated using spin-polarized resonant photoemission. A clear Zhang-Rice singlet (ZRS) is observed at all doping levels. Its stability and polarization are preserved as a function of doping, suggesting that the concept of the ZRS can be used across a wide doping range and up to the metallic nonsuperconducting overdoped regime. The results are significant for theoretical models that use the ZRS approximation and for the understanding of the peculiar interplay between the ZRS and the remaining localized spins.

本文言語English
論文番号027002
ジャーナルPhysical Review Letters
115
2
DOI
出版ステータスPublished - 2015 7 7
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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