Skip to Main content Skip to Navigation
Journal articles

Dynamical Correlations and Screened Exchange on the Experimental Bench: Spectral Properties of the Cobalt Pnictide BaCo2As2

Abstract : Understanding the Fermi surface and low-energy excitations of iron or cobalt pnictides is crucial for assessing electronic instabilities such as magnetic or superconducting states. Here, we propose and implement a new approach to compute the low-energy properties of correlated electron materials, taking into account both screened exchange beyond the local density approximation and local dynamical correlations. The scheme allows us to resolve the puzzle of BaCo2As2, for which standard electronic structure techniques predict a ferromagnetic instability not observed in nature.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-02363989
Contributor : Michel Ferrero Connect in order to contact the contributor
Submitted on : Thursday, November 14, 2019 - 4:23:56 PM
Last modification on : Monday, December 13, 2021 - 9:16:09 AM

Links full text

Identifiers

Citation

Ambroise van Roekeghem, Thomas Ayral, Jan Tomczak, Michele Casula, Nan Xu, et al.. Dynamical Correlations and Screened Exchange on the Experimental Bench: Spectral Properties of the Cobalt Pnictide BaCo2As2. Physical Review Letters, American Physical Society, 2014, 113 (26), ⟨10.1103/PhysRevLett.113.266403⟩. ⟨hal-02363989v2⟩

Share

Metrics

Record views

248