ARPES study of quasiparticle state in electron-doped cuprate Nd 2-xCexCuO4

Hiroaki Matsui, Kensei Terashima, Takafumi Sato, Takashi Takahashi, Shancai Wang, Hongbo Yang, Hong Ding, Tetsushi Uefuji, Kazuyoshi Yamada

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We report high-resolution angle-resolved photoemission spectroscopy on electron-doped cuprate Nd2-xCexCuO4 to study the quasiparticle (QP) state in the vicinity of the Fermi level. Measurements of momentum dependence have revealed that the mass-renormalized QP state around (π, 0) continuously evolves into the high-energy correlation gap, which opens at the intersecting point of the Fermi surface and the magnetic zone boundary. We also observed that the QP spectrum shows remarkable temperature and Ce-concentration dependence in accordance with the spin correlation. These results indicate that the heavy-mass QP state in the electron-doped cuprate originates in the antiferromagnetic order/fluctuation.

Original languageEnglish
Pages (from-to)249-253
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume67
Issue number1-3
DOIs
Publication statusPublished - 2006 Jan

Keywords

  • C. Photoelectron Spectroscopy

ASJC Scopus subject areas

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

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