Domaines
Condensed matter
Nouveaux états électroniques de la matière corrélée
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Type of internship
Expérimental Description
We propose the study of systems containing kagome planes of transition metals (Fe, Co, Rh…), which intrinsically bring together strong electronic correlations and topologically non-trivial band structures. The kagome network features corner sharing triangles and hexagons. A simple tight-binding model of a kagome plane leads to a very intriguing electronic structure, featuring Dirac points and flat bands due to quantum interferences. Many real bulk materials contain metallic kagome planes, but whether their electronic structure corresponds well to this model still and which electronic properties may emerge still has to be explored. We propose to synthesize and characterize in the laboratory such compounds (e.g. Fe1-xCoxSn or Co3Sn2S2) and apply to them various perturbations (doping, strain…) to modify their properties. We will then perform angle resolved photoemission experiments at the SOLEIL synchrotron near our laboratory to study its electronic band structure and check for the presence of topological and/or correlated properties.
Contact
Véronique Brouet