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arXiv · 2001.10255

Systematic construction of topological flat-band models by molecular-orbital representation

Tomonari Mizoguchi·Yasuhiro Hatsugai
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Abstract

On the basis of the "molecular-orbital" representation which describes generic flat-band models, we propose a systematic way to construct a class of flat-band models with finite-range hoppings that have topological natures. In these models, the topological natures are encoded not into the flat band itself but into the dispersive bands touching the flat band. Such a band structure may become a source of exotic phenomena arising from the combination of flat bands, topology and correlations.

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Tomonari Mizoguchi, Yasuhiro Hatsugai. 2020-01-28. Systematic construction of topological flat-band models by molecular-orbital representation. https://doi.org/10.1103/physrevb.101.235125

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