535 citations · 2.8k across the 46 of their papers we have counts for
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Chiral split magnons in metallic g-wave altermagnets: Insights from many-body perturbation theory
Wejdan Beida, Ersoy Sasioglu, Christoph Friedrich +3
Altermagnets are a novel class of magnetic materials that bridge the gap between ferromagnets (FMs) and antiferromagnets (AFMs). A key feature is the non-degeneracy of magnon modes…
Strength of effective Coulomb interaction in two-dimensional transition-metal Halides MX and MX (M=Ti, V, Cr, Mn, Fe, Co, Ni; X=Cl, Br, I)
Y. Yekta, H. Hadipour, E. Sasioglu +4
We calculate the strength of the effective onsite Coulomb interaction (Hubbard ) in two-dimensional (2D) transition-metal (TM) dihalides MX and trihalides MX (M=Ti, V, C…
Position Representation of Effective Electron-Electron Interactions in Solids
Tor Jonas Sjöstrand, Fredrik Nilsson, Christoph Friedrich +1
An essential ingredient in many model Hamiltonians, such as the Hubbard model, is the effective electron-electron interaction , which enters as matrix elements in some localized…
Electron-magnon scattering in elementary ferromagnets from first principles: lifetime broadening and band anomalies
Mathias C. T. D. Müller, Stefan Blügel, Christoph Friedrich
We study the electron-magnon scattering in bulk Fe, Co, and Ni within the framework of many-body perturbation theory implemented in the full-potential linearized augmented-plane-wa…
Renormalization of effective interactions in a negative charge-transfer insulator
Priyanka Seth, Oleg E. Peil, Leonid Pourovskii +6
We compute from first principles the effective interaction parameters appropriate for a low-energy description of the rare-earth nickelate LuNiO involving the partially occup…
Ab-initio calculation of the effective on-site Coulomb interaction parameters for half-metallic magnets
Ersoy Sasioglu, Iosif Galanakis, Christoph Friedrich +1
Correlation effects play an important role in the electronic structure of half-metallic (HM) magnets. In particular, they give rise to non-quasiparticle states above (or below) the…