Speaker
Description
Molten-Metal Flux Synthesis is a well-established synthetic approach, in which single-crystal growth is facilitated by dissolving high-melting metals in low-melting ones. It has been proven as a fruitful method for the formation of metastable or kinetically stabilized phases, which would otherwise be unattainable by conventional solid-state methods. Layered chromium-chalcogenide based quantum materials are of particular interest due to their rich magnetism and strong electronic correlations. We systematically explore the engineering of alkali-chromium-telluride flux reactions to obtain large single-crystals of Delafossite-type $A$CrTe$_{2}$ (A = alkali cation) phases as well as previously unreported $A_{2.4}$Cr$_{8}$Te$_{14}$ compounds, which combine the structural architecture of layered $A$CrTe$_{2}$ phases and tunnelled $A$Cr$_{5}$Te$_{8}$ Hollandite-likes. Beyond the synthetic work, we determine their magnetic properties and their spin structure. Their diverse magnetism in combination with their layered structure make them ideal candidates for future spintronic devices
