Detection of Zhang-Rice singlets using spin-polarized photoemission

N. B. Brookes, G. Ghiringhelli, O. Tjernberg, L. H. Tjeng, Takashi Mizokawa, T. W. Li, A. A. Menovsky

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Abstract

Zhang-Rice singlets in high temperature superconductors were detected using spin-resolved photoemission study. Optimally doped cuprates were cleaved in situ in an ultrahigh vacuum chamber with a base pressure of 4 × 10-11 mbar. The spectra were recorded at room temperature using a 140 mm mean radius hemispherical analyzer. Results indicated that the lowest lying states in high temperature superconductors were of singlet character and these states were more stable than the triplet states by 1 eV.

Original languageEnglish
Article number237003
Pages (from-to)2370031-2370034
Number of pages4
JournalPhysical Review Letters
Volume87
Issue number23
Publication statusPublished - 2001 Dec 3
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Brookes, N. B., Ghiringhelli, G., Tjernberg, O., Tjeng, L. H., Mizokawa, T., Li, T. W., & Menovsky, A. A. (2001). Detection of Zhang-Rice singlets using spin-polarized photoemission. Physical Review Letters, 87(23), 2370031-2370034. [237003].