242 citations · 1.2k across the 27 of their papers we have counts for
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Bond disproportionation, charge self-regulation and ligand holes in s-p and in d electron ABX3 perovskites by density functional theory
Gustavo Martini Dalpian, Qihang Liu, Julien Varignon +2
Some ABX3 perovskites exhibit different local environments (DLE) for the same B atoms in the lattice, an effect referred to as disproportionation, distinguishing such compounds fro…
Switchable and tunable Rashba-type spin splitting in covalent perovskite oxides
Julien Varignon, Jacobo Santamaria, Manuel Bibes
In transition metal perovskites (ABO3) most physical properties are tunable by structural parameters such as the rotation of the BO6 octahedra. Examples include the Néel temperatur…
ARPES and transport studies of the elemental topological insulator -Sn
Quentin Barbedienne, Julien Varignon, Nicolas Reyren +11
Gray tin, also known as -Sn, can be turned into a three-dimensional topological insulator (3D-TI) by strain and finite size effects. Such room temperature 3D-TI is peculiarly in…