Fermi surface and band dispersion in La2-xSrxCuO4

Akihiro Ino, Changyoung Kim, Takashi Mizokawa, Zhi Xun Shen, Atsushi Fujimori, Masamitsu Takaba, Kenji Tamasaku, Hiroshi Eisaki, Shinichi Uchida

Research output: Contribution to journalArticle

120 Citations (Scopus)

Abstract

Using angle-resolved photoemission spectroscopy (ARPES), we observe the band structure, the Fermi surface and their doping dependences in La2-xSrxCuO4. The results reveal that the Fermi surface undergoes a dramatic change: it is holelike and centered at (π.π) in underdoped (x = 0.1) and optimally doped (x = 0.15) samples as in other cuprates. while it is electronlike and centered at (0, 0) in heavily overdoped (x = 0.3) ones. The peak in the ARPES spectra near (π/2, π/2) is broad and weak unlike that in other cuprates. In the underdoped and optimally doped samples, a superconducting gap (Δ = 10-15 meV) is observed near (π, 0).

Original languageEnglish
Pages (from-to)1496-1499
Number of pages4
JournalJournal of the Physical Society of Japan
Volume68
Issue number5
Publication statusPublished - 1999 May
Externally publishedYes

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cuprates
Fermi surfaces
photoelectric emission
spectroscopy

Keywords

  • ARPES
  • Band dispersion
  • Doping dependence
  • Fermi surface
  • LaSrCuO
  • Superconducting gap

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Ino, A., Kim, C., Mizokawa, T., Shen, Z. X., Fujimori, A., Takaba, M., ... Uchida, S. (1999). Fermi surface and band dispersion in La2-xSrxCuO4. Journal of the Physical Society of Japan, 68(5), 1496-1499.

Fermi surface and band dispersion in La2-xSrxCuO4. / Ino, Akihiro; Kim, Changyoung; Mizokawa, Takashi; Shen, Zhi Xun; Fujimori, Atsushi; Takaba, Masamitsu; Tamasaku, Kenji; Eisaki, Hiroshi; Uchida, Shinichi.

In: Journal of the Physical Society of Japan, Vol. 68, No. 5, 05.1999, p. 1496-1499.

Research output: Contribution to journalArticle

Ino, A, Kim, C, Mizokawa, T, Shen, ZX, Fujimori, A, Takaba, M, Tamasaku, K, Eisaki, H & Uchida, S 1999, 'Fermi surface and band dispersion in La2-xSrxCuO4', Journal of the Physical Society of Japan, vol. 68, no. 5, pp. 1496-1499.
Ino A, Kim C, Mizokawa T, Shen ZX, Fujimori A, Takaba M et al. Fermi surface and band dispersion in La2-xSrxCuO4. Journal of the Physical Society of Japan. 1999 May;68(5):1496-1499.
Ino, Akihiro ; Kim, Changyoung ; Mizokawa, Takashi ; Shen, Zhi Xun ; Fujimori, Atsushi ; Takaba, Masamitsu ; Tamasaku, Kenji ; Eisaki, Hiroshi ; Uchida, Shinichi. / Fermi surface and band dispersion in La2-xSrxCuO4. In: Journal of the Physical Society of Japan. 1999 ; Vol. 68, No. 5. pp. 1496-1499.
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