The so-called ‘kagome’ lattices are made by two-dimensional (2D) lattices of corner-sharing triangles, consisting of 3d transition metal atoms (T: Fe, Mn, Co) with space-filling atoms (X: Sn, Ge) at the centre of the hexagon, to form binaries T_mX_n compounds. They typically show the simultaneous existence of Dirac fermions, flat bands and van Hove singularities in their electronic structures. Such a rich interplay between topology and correlated phenomena, provides interesting platforms towards unconventional magnetic and/or superconducting states, making kagome magnets extremely attracting for a wide range of applications. As of today, several open fundamental questions are unresolved, requiring a deep understanding of the atomic scale chemical, structural and magnetic properties of T_mX_n materials. Within this proposal we aim at addressing some of them, by making use of emission Mo ssbauer spectroscopy at ISOLDE/CERN with the help of radioactive ⁵⁷Mn and ¹¹⁹In probes.  

https://isolde.web.cern.ch/active-experiments

Full proposal

Contact: Roberto Mantovan