Visualizing electron pockets in cuprate superconductors

Abstract

Fingerprint of the electron-pocket in cuprates has been obtained only in numerous magneto-transport measurements, but its absence in spectroscopic observations pose a long-standing mystery. We develop a theoretical tool to provide ways to detect electron-pockets via numerous spectroscopies including scanning tunneling microscopy (STM) spectra, inelastic neutron scattering (INS), and angle-resolved photoemission spectroscopy (ARPES). We show that the quasiparticle-interference (QPI) pattern, measured by STM, shows additional 7 $\mathbf{q}$ vectors associated with the scattering on the electron-pocket, than that on the hole-pocket. Furthermore, the Bogolyubov quasiparticle scatterings of the electron pocket may lead to a second magnetic resonance mode in the INS spectra at a higher resonance energy. Finally, we reanalyze some STM, INS, and ARPES experimental data of several cuprate compounds which dictates the direct fingerprints of electron pockets in these systems.

10 pages, 6 figures, submitted

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Cited by in corpus (7)

• Fermi Surface and Pseudogap Evolution in a Cuprate Superconductor
• Intermediate Coupling Model of the Cuprates
• Spin excitations in layered antiferromagnetic metals and superconductors
• Electron-like Fermi surface and in-plane anisotropy due to chain states in YBa${}_2$Cu${}_3$O${}_{7-\delta }$ superconductors
• Doping asymmetry of superconductivity coexisting with antiferromagnetism in spin fluctuation theory
• Discerning electronic fingerprints of nodal and antinodal nestings and their phase coherences in doped cuprate superconductors
• The k-space Origins of Scattering in Bi2Sr2CaCu2O8+x