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Article
Surface-driven electronic structure in LaFeAsO studied by angle-resolved photoemission spectroscopy
Physical Review B
  • Chang Liu, Iowa State University
  • Yongbin Lee, Iowa State University
  • Ari D. Palczewski, Iowa State University
  • J.-Q. Yan, Iowa State University
  • Takeshi Kondo, Iowa State University
  • Bruce N. Harmon, Iowa State University
  • R. William McCallum, Iowa State University
  • Thomas A. Lograsso, Iowa State University
  • Adam Kaminski, Iowa State University
Document Type
Article
Publication Date
8-26-2010
DOI
10.1103/PhysRevB.82.075135
Abstract

We measured the electronic structure of an iron arsenic parent compound LaFeAsO using angle-resolved photoemission spectroscopy (ARPES). By comparing with a full-potential linear augmented plane wave calculation we show that the extra large Γhole pocket measured via ARPES comes from electronic structure at the sample surface. Based on this we discuss the strong-polarization dependence of the band structure and a temperature-dependent holelike band around the M point. The two phenomena give additional evidences for the existence of the surface-driven electronic structure.

Comments

This article is from Physical Review B 82 (2010): 075135, doi:10.1103/PhysRevB.82.075135.

Copyright Owner
American Physical Society
Language
en
Date Available
2013-09-20
File Format
application/pdf
Citation Information
Chang Liu, Yongbin Lee, Ari D. Palczewski, J.-Q. Yan, et al.. "Surface-driven electronic structure in LaFeAsO studied by angle-resolved photoemission spectroscopy" Physical Review B Vol. 82 Iss. 7 (2010) p. 075135
Available at: http://works.bepress.com/thomas_lograsso/39/