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arXiv · 2110.13514

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

Michael Sekania·Andreas Östlin·Wilhelm H. Appelt·S. B. Dugdale·Liviu Chioncel
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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.

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Michael Sekania, Andreas Östlin, Wilhelm H. Appelt, S. B. Dugdale, Liviu Chioncel. 2021-10-26. $L$-hole Pockets of the Palladium Fermi Surface Revealed by Positron Annihilation Spectroscopy. https://doi.org/10.1103/physrevb.104.205102

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