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Comparative analysis of models for the α − γ phase transition in cerium: A DFT+DMFT study using Wannier orbitals
Bernard Amadon,Alexis Gerossier +1 more
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In this article, the authors clarified the orbital mechanism of the $sdf$ Wannier orbital basis to describe the electronic structure of cerium and used this basis to study the relative role of several orbital hoppings.Abstract:
We clarify the orbital mechanism of the $\ensuremath{\alpha}\text{\ensuremath{-}}\ensuremath{\gamma}$ transition in cerium. First we built an $sdf$ Wannier orbital basis to describe the electronic structure of cerium. Second, we use this basis to study the relative role of several orbital hoppings upon compression of cerium. Third, we use DFT + DMFT calculations to quantify the impact of these hoppings on electronic structure. Our conclusion is that upon compression of $\ensuremath{\gamma}$ cerium, the change of hybridization is due to both interatomic $ff$ and $fd$ hopping integrals. In particular, neglecting $ff$ hoppings leads to an important renormalization of both the hybridization and the quasiparticle peak. Thus, neither the Kondo volume collapse nor the Mott transition model are sufficient to describe the isostructural transition in cerium.read more
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The Abinit project: Impact, environment and recent developments
Xavier Gonze,Bernard Amadon,Gabriel Antonius,Frédéric Arnardi,Lucas Baguet,Lucas Baguet,Jean-Michel Beuken,Jordan Bieder,François Bottin,J. Bouchet,Eric Bousquet,Nils Brouwer,Fabien Bruneval,Guillaume Brunin,Théo Cavignac,Jean-Baptiste Charraud,Wei Chen,Michel Côté,Stefaan Cottenier,Jules Denier,Grégory Geneste,Philippe Ghosez,Matteo Giantomassi,Yannick Gillet,Olivier Gingras,D. R. Hamann,Geoffroy Hautier,Xu He,Nicole Helbig,Natalie Holzwarth,Yongchao Jia,F. Jollet,William Lafargue-Dit-Hauret,Kurt Lejaeghere,Miguel A. L. Marques,Alexandre Martin,Cyril Martins,Henrique Pereira Coutada Miranda,Francesco Naccarato,Kristin A. Persson,Kristin A. Persson,Guido Petretto,Valentin Planes,Yann Pouillon,Sergei Prokhorenko,Fabio Ricci,Gian-Marco Rignanese,Alessandra Romero,Michael Marcus Schmitt,Marc Torrent,Michiel van Setten,Michiel van Setten,Benoit Van Troeye,Matthieu J. Verstraete,G. Zérah,Josef W. Zwanziger +55 more
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Journal ArticleDOI
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Journal ArticleDOI
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Journal ArticleDOI
Topological phase transition in the archetypal f -electron correlated system of cerium
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