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 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.
Cite
@article{arxiv.1203.5746,
title = {Visualizing electron pockets in cuprate superconductors},
author = {Tanmoy Das and R. S. Markiewicz and A. Bansil and A. V. Balatsky},
journal= {arXiv preprint arXiv:1203.5746},
year = {2012}
}
Comments
10 pages, 6 figures, submitted