MIT News May 19, 2022 The recently introduced theories of topological quantum chemistry and symmetry-based indicators (SIs) have facilitated the discovery of topological phases of matter and large-scale searches for materials with experimentally accessible topological properties at the Fermi energy (EF). Away from EF, energetically isolated bands and topological gaps are also useful in numerous experimental settings; they can be accessed via (electro)chemical doping, electrostatic gating, hydrostatic pressure, and nonequilibrium photoexcitation and are relevant to Floquet engineering and nonlinear optical experiments. An international team of researchers (Spain, USA – MIT, Princeton University, Germany) has completed a catalog of stable and […]
Tag Archives: Materials database
When a band falls flat: Searching for flatness in materials
Science Daily March 30, 2022 An international team of researchers (USA – Princeton University, France, Germany, China, Spain) has developed a catalog of the naturally occurring three-dimensional stoichiometric materials with flat bands around the Fermi level. They considered 55,206 materials from the Inorganic Crystal Structure Database which provides their structural parameters, space group, band structure, density of states and topological characterization and combined several direct signatures and properties of band flatness with a high-throughput analysis of all crystal structures. From this set they created the Materials Flatband Database website https://www.topologicalquantumchemistry.fr/flatbands/ , with its own search engine for future theoretical and […]