Importance of Matrix Elements in the ARPES Spectra of BISCO

1999/10/29 by A. Bansil, Arun Bansil, M. Lindroos · 8 citations
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #Inorganic Fluorides and Related Compounds #Physics of Superconductivity and Magnetism #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.83.5154

4 pages, 4 figures: To appear in Phys. Rev. Lett. Nov. 1999

arxiv created 1999/10/29 · openalex publication_date 1999/12/13 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We have carried out extensive first-principles angle-resolved photointensity (ARPES) simulations in Bi2212 wherein the photoemission process is modeled realistically by taking into account the full crystal wave functions of the initial and final states in the presence of the surface. The spectral weight of the ARPES feature associated with the CuO₂ plane bands is found to undergo large and systematic variations with k_\ensuremath∥ as well as the energy and polarization of the incident photons. These theoretical predictions are in good accord with the corresponding measurements, indicating that the remarkable observed changes in the spectral weights in Bi2212 are essentially a matrix element effect and that the importance of matrix elements should be kept in mind in analyzing the ARPES spectra in the high T_c's.

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