Corpus ID: 236318559

Metal-insulator transition in infinitesimally weakly disordered flatbands

@inproceedings{ade2021MetalinsulatorTI,
  title={Metal-insulator transition in infinitesimally weakly disordered flatbands},
  author={Tilen {\vC}ade{\vz} and Yeongjun Kim and Alexei Andreanov and Sergej Flach},
  year={2021}
}
We study the effect of infinitesimal onsite disorder on d-dimensional all bands flat lattices. The lattices are generated from diagonal Hamiltonians by a sequence of (d+1) local unitary transformations parametrized by angles θi. Without loss of generality, we consider the case of two flat bands separated by a finite gap ∆. The perturbed states originating from the flat bands are described by an effective tight binding network with finite onand off-diagonal disorder strength which depends on the… Expand

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