Chemical potential shift, density of states and Fermi surfaces in overdoped and underdoped La2-xSrxCuO4

A. Fujimori, A. Ino, T. Mizokawa, C. Kim, Z. X. Shen, T. Sasagawa, T. Kimura, K. Kishio, M. Takaba, K. Tamasaku, H. Eisaki, S. Uchidau

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18 Citations (Scopus)

Abstract

We have made photoemission studies of La2-xSrxCuO4 (LSCO) and found the following: (1) suppression of the chemical potential (μ) shift for small x indicates a breakdown of the Fermi-liquid picture in the underdoped regime and suggests the opening of a pseudogap; (2) valence band spectra have indeed shown a pseudogap whose magnitude increases with decreasing x, simultaneously the density of states (DOS) at μ diminishes; (3) ARPES measurements have revealed changes from an electron-like Fermi surface in the overdoped regime to a hole-like one in the underdoped regime.

Original languageEnglish
Pages (from-to)1892-1896
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume59
Issue number10-12
DOIs
Publication statusPublished - 1998 Jan 1
Externally publishedYes

Keywords

  • ARPES
  • Chemical potential
  • D. Fermi surface
  • LaSrCuO
  • Photoemission
  • Pseudogap

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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    Fujimori, A., Ino, A., Mizokawa, T., Kim, C., Shen, Z. X., Sasagawa, T., Kimura, T., Kishio, K., Takaba, M., Tamasaku, K., Eisaki, H., & Uchidau, S. (1998). Chemical potential shift, density of states and Fermi surfaces in overdoped and underdoped La2-xSrxCuO4. Journal of Physics and Chemistry of Solids, 59(10-12), 1892-1896. https://doi.org/10.1016/S0022-3697(98)00137-1