Structural Origin of Apparent Fermi Surface Pockets in Angle-Resolved Photoemission of Bi2Sr2-xLaxCuO6+δ

Phil King, J. A. Rosen, Worawat Meevasana, Anna Tamai, Emil Jerzy Rozbicki, R. Comin, G. Levy, D. Fournier, Y. Yoshida, H. Eisaki, K. M. Shen, N. J. C. Ingle, A. Damascelli, Felix Baumberger

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41 Citations (Scopus)

Abstract

We observe apparent hole pockets in the Fermi surfaces of single-layer Bi-based cuprate superconductors from angle-resolved photoemission. From detailed low-energy electron diffraction measurements and an analysis of the angle-resolved photoemission polarization dependence, we show that these pockets are not intrinsic but arise from multiple overlapping superstructure replicas of the main and shadow bands. We further demonstrate that the hole pockets reported recently from angle-resolved photoemission [Meng et al., Nature (London) 462, 335 (2009)] have a similar structural origin and are inconsistent with an intrinsic hole pocket associated with the electronic structure of a doped CuO2 plane.

Original languageEnglish
Article number127005
Number of pages4
JournalPhysical Review Letters
Volume106
Issue number12
DOIs
Publication statusPublished - 24 Mar 2011

Keywords

  • HIGH-TEMPERATURE SUPERCONDUCTORS
  • T-C SUPERCONDUCTOR
  • PSEUDOGAP
  • STATE
  • BI2SR2CACU2O8+DELTA
  • COEXISTENCE
  • ARCS

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