$L$-hole Pockets of the Palladium Fermi Surface Revealed by Positron Annihilation Spectroscopy

Abstract

Using the combined Density Functional and Dynamical Mean Field theory we study relativistic corrections to the Fermi surface of palladium. We find indeed that relativistic corrections create a small hole pockets at the $L$-symmetry points. Furthermore we show that the computed two dimensional Angular Correlation of Electron Positron Annihilation Radiation (the so called $2D$-ACAR) clearly demonstrates the existence of these $L$-hole pockets, which remains robust against electronic correlations. A $2D$-ACAR experiment should therefore provide the "smoking-gun" proof for the existence of the $L$-hole pockets in the palladium Fermi surface.

13 pages, 10 figures, accepted in PRB

References in corpus (4)

• Quasiparticle self-consistent $GW$ method; a basis for the independent-particle approximation
• Screened Coulomb interaction in the maximally localized Wannier basis
• Electronic Correlations in Vanadium Revealed by Electron-Positron Annihilation Measurements
• Momentum Density Spectroscopy of Pd: Comparison of 2D-ACAR and Compton Scattering Using a New 1D-to-2D Reconstruction Method