Topologically non-trivial materials are by now a thriving field of condensed matter physics. Their potential for future technologies is based on unusual behavior of fermions in this kind of compounds. But only recently connections to known solid state concepts found their way in this field. For further progress a common language and understanding of topological materials would be of value.<br/>Topologically non-trivial behavior can be linked to structural and electronic properties of the compounds. For example, square-net based compounds exhibit a wide variety of interesting electronic properties. We already connected crystallographic data and electron-counting rules for PbFCl-type (and structurally related) compounds to set a base for a chemical understanding of topological non-trivial behavior in simple compounds. Since then we expanded this way of description aiming for more complex structures and work on a more general concept continues. On the way new materials were identified as interesting targets for further studies. Our goal is to open the field for a wider, more chemically oriented audience.

Chemist's view on square-net based topological materials

2019 Spring National Meeting

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