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

121 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
DOIs
Publication statusPublished - 1999 May
Externally publishedYes

Keywords

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Fermi surface and band dispersion in La<sub>2-x</sub>Sr<sub>x</sub>CuO<sub>4</sub>'. Together they form a unique fingerprint.

  • Cite this

    Ino, A., Kim, C., Mizokawa, T., Shen, Z. X., 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, 68(5), 1496-1499. https://doi.org/10.1143/JPSJ.68.1496