Probing the singlet character of the two-hole states in cuprate superconductors

G. Ghiringhelli*, N. B. Brookes, L. H. Tjeng, T. Mizokawa, O. Tjernberg, P. G. Steeneken, A. A. Menovsky

*この研究の対応する著者

研究成果: Conference article査読

7 被引用数 (Scopus)

抄録

Using spin-resolved resonant photoemission we have probed the singlet vs. triplet character of the two-hole state in the layered cuprates Bi2Sr2CaCu2O8+δ, La2-xSrxCuO4 and Sr2CuO2Cl2. The combination of the photon circular polarization with the photoelectron spin detection gives access to the character of the photoemission final states, which correspond to the two-hole configurations localized at a (CuO4) site. In particular, the lowest energy state is found to have a very high singlet character in all the measured compounds. This can be considered as a strong indication of the existence and stability of the so-called Zhang-Rice singlets in the layered cuprates.

本文言語English
ページ(範囲)34-35
ページ数2
ジャーナルPhysica B: Condensed Matter
312-313
DOI
出版ステータスPublished - 2002 3
外部発表はい
イベントInternational Conference on Strongly Correlated Electrons - Ann Arbor, MI, United States
継続期間: 2002 8 62002 8 6

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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