Abstract
We report angle-resolved photoemission spectra (ARPES) for emission from the Fermi energy (EF) over a large area of the (kx,ky) plane using 21.2 and 32 eV photon energies in two distinct polarizations from an optimally doped single crystal of Bi₂Sr₂CaCu₂O₈₊δ (Bi2212), together with extensive first-principles simulations of the ARPES intensities. The results display a wide-ranging level of accord between theory and experiment, demonstrating that the ARPES matrix elements can produce a striking variety of Fermi surface maps, especially in the presence of secondary features arising from modulations of the underlying tetragonal system. Our analysis demonstrates how the energy and polarization dependency of the ARPES matrix element can help to disentangle the primary contributions to the spectrum from the secondary features and indicates that secondary features reflect a direct modulation of the CuO₂ planes.
Keywords
angle-resolved photoemission, Fermi energy, Bi₂Sr₂CaCu₂O₈+δ
Subject Categories
Photoemission, Fermi surfaces, Spectrum analysis
Disciplines
Physics
Publisher
American Physical Society
Publication Date
1-22-2003
Rights Information
Copyright 2003 American Physical Society.
Rights Holder
American Physical Society
Recommended Citation
Asensio, M. C.; Avila, J.; Roca, L.; Tejeda, A.; Gu, G. D.; Lindroos, M.; Markiewicz, R. S.; and Bansil, A., "Emergence of multiple Fermi surface maps in angle-resolved photoemission from Bi₂Sr₂CaCu₂O₈+δ" (2003). Physics Faculty Publications. Paper 379.
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Notes
Originally published in Physical Review B v.67 (2003): 014519. DOI: 10.1103/PhysRevB.67.014519