Anomalous band folding due to the BiO superstructure in Bi2Sr2CaCu2O8 studied by angle-resolved photoemission

T. Yokoya, T. Takahashi, T. Mochiku, K. Kadowaki

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Angle-resolved photoemission measurement has been performed on a twin-free Bi2Sr2CaCu2O8 single crystal to study the band-folding effect due to the BiO superstructure. It was found that the superstructure running along the b axis considerably modulates the electronic structure near the Fermi level (EF) in that direction, almost smearing out the dispersive feature of a band which crosses the Fermi level. In contrast with the energy region near EF, the main body of the valence band (1 to 7 eV in binding energy) shows a comparable but different energy dispersion between the a- and b-axis directions. This indicates that the band-folding effect may be different between the near-EF region and the whole valence band in Bi2Sr2CaCu2O8.

Original languageEnglish
Pages (from-to)10225-10229
Number of pages5
JournalPhysical Review B
Volume50
Issue number14
DOIs
Publication statusPublished - Jan 1 1994

ASJC Scopus subject areas

  • Condensed Matter Physics

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