Observation of the Fermi surface, the band structure, and their diffraction replicas of Sr14-xCaxCu24O41 by angle-resolved photoemission spectroscopy

Research output: Contribution to journal › Research article › Contributed › peer-review

Contributors

  • A. Koitzsch - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • D. S. Inosov - , Leibniz Institute for Solid State and Materials Research Dresden, Max Planck Institute for Gravitational Physics (Albert Einstein Institute) (Author)
  • H. Shiozawa - , University of Surrey (Author)
  • V. B. Zabolotnyy - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • S. V. Borisenko - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • A. Varykhalov - , Helmholtz Centre Berlin for Materials and Energy (Author)
  • C. Hess - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • M. Knupfer - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • U. Ammerahl - , Université Paris-Saclay (Author)
  • A. Revcolevschi - , Université Paris-Saclay (Author)
  • B. Buechner - , Leibniz Institute for Solid State and Materials Research Dresden (Author)

Abstract

We have investigated the electronic structure of Sr14-xCaxCu24O41 (x=0; 11.5) single crystals by angle-resolved photoemission spectroscopy. A satisfactory agreement with band-structure calculations is found. The Fermi surface is observed for Sr2.5Ca11.5Cu24O41 from which we derive a charge carrier concentration between 0.15 and 0.2 holes per Cu atom at T=25 K in the ladder substructure. The chain substructures, on the other hand, act as diffraction grating for the ladder photoelectrons giving rise to incommensurate replicas of the ladder bands.

Details

Original languageEnglish
Article number113110
Number of pages4
JournalPhysical Review B
Volume81
Issue number11
Publication statusPublished - Mar 2010
Peer-reviewedYes
Externally publishedYes

External IDs

Scopus 77954960402

Keywords

Keywords

  • SPIN-LADDER, SUPERCONDUCTIVITY

Library keywords