Excitation energy map of the high-energy dispersion anomalies in cuprates

Abstract

The anomalous high-energy dispersion of the conductance band in the high-Tc superconductor Pb-Bi2212 has been extensively mapped by angle-resolved photoemission (ARPES) as a function of excitation energy in the range from 34 to 116 eV. Two distinctive types of dispersion behavior are observed around 0.6 eV binding energy, which alternate as a function of photon energy. The continuous transitions observed between the two kinds of behavior near 50, 70, and 90 eV photon energies allow to exclude the possibility that they originate from the interplay between the bonding and antibonding bands. The effects of three-dimensionality can also be excluded as a possible origin of the excitation energy dependence, as the large period of the alterations is inconsistent with the lattice constant in this material. We therefore confirm that the strong photon energy dependence of the high-energy dispersion in cuprates originates mainly from the photoemission matrix element that suppresses the photocurrent in the center of the Brillouin zone.

3 pages, 3 figures. Fig. 3 and reference list updated since v1

References in corpus (18)

• A universal high energy anomaly in angle resolved photoemission spectra of high temperature superconductors - possible evidence of spinon and holon branches
• Kinks in the dispersion of strongly correlated electrons
• High-energy kink in high-temperature superconductors
• The hierarchy of multiple many-body interaction scales in high-temperature superconductors
• Anomalous high energy dispersion in photoemission spectra from insulating cuprates
• High-energy scale revival and giant kink in the dispersion of a cuprate superconductor
• "Waterfalls" in cuprates
• "Waterfalls" phenomenon in superconducting cuprates
• High energy kink in the single particle spectra of the two-dimensional Hubbard model
• Paramagnon-induced dispersion anomalies in the cuprates
• Hidden Charge 2e Boson in Doped Mott Insulators: Field Theory of Mottness
• Angle-resolved photoemission spectroscopy of band tails in lightly doped cuprates
• Extracting the spectral function of the cuprates by a full two-dimensional analysis: Angle-resolved photoemission spectra of Bi2Sr2CuO6
• Universality of the single-particle spectra of cuprate superconductors
• Universal waterfalls-like feature in the spectral function of high temperature superconductors
• Possible observation of "string excitations" of a hole in a quantum antiferromagnet
• High energy kink in the dispersion of a hole in an antiferromagnet -- double-occupancy effects on electronic excitations
• Incoherent mid-infrared charge excitation and the high energy anomaly in the photoemission spectra of cuprates

Cited by in corpus (10)

• Momentum-resolved superconducting gap in the bulk of Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ from combined ARPES and $\mu$SR measurements
• Symmetry of spin excitation spectra in the tetragonal paramagnetic and superconducting phases of 122-ferropnictides
• Intermediate Coupling Model of the Cuprates
• Electronic structure and nesting-driven enhancement of the RKKY interaction at the magnetic ordering propagation vector in Gd2PdSi3 and Tb2PdSi3
• ARPES experiment in fermiology of quasi-2D metals (Review Article)
• CeFePO: f-d hybridization and quenching of superconductivity
• Evidence for Fermi surface reconstruction in the static stripe phase of La${}_{1.8-x}$Eu${}_{0.2}$Sr${}_x$CuO${}_4$, $x=1/8$
• How chemical pressure affects the fundamental properties of rare-earth pnictides: an ARPES view
• Angle-Resolved Photoelectron Spectroscopy Studies of the Many-Body Effects in the Electronic Structure of High-Tc Cuprates
• Energy-dependent scaling of incoherent spectral weight and the origin of the waterfalls in high-Tc cuprates