Soft x-ray absorption spectroscopy studies of doped Pr-containing cuprates

J. M. Chen, Shiu-Jen Liu, C. F. Chang, J. Y. Lin, Y. S. Gou, H. D. Yang

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Using high-resolution O K-edge x-ray absorption near-edge- structure (XANES) spectroscopy, unoccupied states of the YxPr1-xBa2Cu3O7 (x=0-1) thin films and polycrystalline Pr1-xCaxBa2Cu3O7 (x=0-0.3) as well as R0.8Pr0.2Ba2Cu3O7 samples (R=Tm, Dy, Gd, and Sm) are investigated. In YxPr1-xBa2Cu3O7, hole numbers in the CuO2 planes decrease significantly with increasing Pr doping level. Hole carriers generated via Ca doping in Pr1-xCaxBa2Cu3O7 are directed predominantly into both the Zhang-Rice and Fehrenbacher- Rice (FR) states, while those in the CuO3 ribbons remain almost unchanged with Ca substitution. In R0.8Pr0.2Ba2Cu3O7, the hole content in the CuO2 planes decreases monotonically with increasing ionic size of the R3+ ions, confirming the hole depletion effect based on the Pr 4f-O 2p hybridization. We demonstrate the spectroscopic evidence of the existence of the FR states. The present XANES results provide a deeper understanding of the nature of hybridization and the origin of the ionic size effect.

Original languageEnglish
Article number014502
Pages (from-to)145021-145026
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number1
Publication statusPublished - 2003 Jan 1

Fingerprint

Absorption spectroscopy
x ray absorption
x ray spectroscopy
cuprates
absorption spectroscopy
rice
Doping (additives)
X rays
Substitution reactions
Spectroscopy
Ions
Thin films
ribbons
depletion
substitutes
high resolution
thin films
spectroscopy
ions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Chen, J. M., Liu, S-J., Chang, C. F., Lin, J. Y., Gou, Y. S., & Yang, H. D. (2003). Soft x-ray absorption spectroscopy studies of doped Pr-containing cuprates. Physical Review B - Condensed Matter and Materials Physics, 67(1), 145021-145026. [014502].

Soft x-ray absorption spectroscopy studies of doped Pr-containing cuprates. / Chen, J. M.; Liu, Shiu-Jen; Chang, C. F.; Lin, J. Y.; Gou, Y. S.; Yang, H. D.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 67, No. 1, 014502, 01.01.2003, p. 145021-145026.

Research output: Contribution to journalArticle

Chen, JM, Liu, S-J, Chang, CF, Lin, JY, Gou, YS & Yang, HD 2003, 'Soft x-ray absorption spectroscopy studies of doped Pr-containing cuprates', Physical Review B - Condensed Matter and Materials Physics, vol. 67, no. 1, 014502, pp. 145021-145026.
Chen, J. M. ; Liu, Shiu-Jen ; Chang, C. F. ; Lin, J. Y. ; Gou, Y. S. ; Yang, H. D. / Soft x-ray absorption spectroscopy studies of doped Pr-containing cuprates. In: Physical Review B - Condensed Matter and Materials Physics. 2003 ; Vol. 67, No. 1. pp. 145021-145026.
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