Xenon-plasma-light low-energy ultrahigh-resolution photoemission study of Co (S1-x Sex) 2 (x=0.075)

Takafumi Sato, Seigo Souma, Katsuaki Sugawara, Kosuke Nakayama, Satyabrata Raj, Haruhiro Hiraka, Takashi Takahashi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have performed low-energy ultrahigh-resolution photoemission spectroscopy on Co (S1-x Sex) 2 (x=0.075) to elucidate the bulk electronic states responsible for the ferromagnetic transition. By using a newly developed plasma-driven low-energy xenon (Xe) discharge lamp (hν=8.436 eV), we clearly observed a sharp quasiparticle peak at the Fermi level together with the remarkable temperature dependence of the electron density of states across the transition temperature. Comparison with the experimental result by the HeIα resonance line (hν=21.218 eV) indicates that the sharp quasiparticle is of bulk origin and is produced by the Fermi-level crossing of the Co 3d eg subband.

Original languageEnglish
Article number113102
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number11
DOIs
Publication statusPublished - 2007 Sep 19

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Xenon-plasma-light low-energy ultrahigh-resolution photoemission study of Co (S1-x Sex) 2 (x=0.075)'. Together they form a unique fingerprint.

  • Cite this