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

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

Research output: Contribution to journalArticle

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
Publication statusPublished - 1998 Oct
Externally publishedYes

Fingerprint

Fermi liquids
Fermi surface
Chemical potential
Photoemission
Valence bands
Fermi surfaces
photoelectric emission
breakdown
retarding
valence
Electrons
shift
electrons

Keywords

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

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Fujimori, A., Ino, A., Mizokawa, T., Kim, C., Shen, Z. X., Sasagawa, T., ... 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.

Chemical potential shift, density of states and Fermi surfaces in overdoped and underdoped La2-xSrxCuO4 . / Fujimori, A.; Ino, A.; Mizokawa, Takashi; Kim, C.; Shen, Z. X.; Sasagawa, T.; Kimura, T.; Kishio, K.; Takaba, M.; Tamasaku, K.; Eisaki, H.; Uchidau, S.

In: Journal of Physics and Chemistry of Solids, Vol. 59, No. 10-12, 10.1998, p. 1892-1896.

Research output: Contribution to journalArticle

Fujimori, A, Ino, A, Mizokawa, T, Kim, C, Shen, ZX, 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, vol. 59, no. 10-12, pp. 1892-1896.
Fujimori, A. ; Ino, A. ; Mizokawa, Takashi ; Kim, C. ; Shen, Z. X. ; Sasagawa, T. ; Kimura, T. ; Kishio, K. ; Takaba, M. ; Tamasaku, K. ; Eisaki, H. ; Uchidau, S. / Chemical potential shift, density of states and Fermi surfaces in overdoped and underdoped La2-xSrxCuO4 In: Journal of Physics and Chemistry of Solids. 1998 ; Vol. 59, No. 10-12. pp. 1892-1896.
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