English

Seeing moir\'e: convolutional network learning applied to twistronics

Mesoscale and Nanoscale Physics 2023-01-05 v1

Abstract

Moir\'e patterns made of two-dimensional (2D) materials represent highly tunable electronic Hamiltonians, allowing a wide range of quantum phases to emerge in a single material. Current modeling techniques for moir\'e electrons requires significant technical work specific to each material, impeding large-scale searches for useful moir\'e materials. In order to address this difficulty, we have developed a material-agnostic machine learning approach and test it here on prototypical one-dimensional (1D) moir\'e tight-binding models. We utilize the stacking dependence of the local density of states (SD-LDOS) to convert information about electronic bandstructure into physically relevant images. We then train a neural network that successfully predicts moir\'e electronic structure from the easily computed SD-LDOS of aligned bilayers. This network can satisfactorily predict moir\'e electronic structures, even for materials that are not included in its training data.

Keywords

Cite

@article{arxiv.2207.11096,
  title  = {Seeing moir\'e: convolutional network learning applied to twistronics},
  author = {Diyi Liu and Mitchell Luskin and Stephen Carr},
  journal= {arXiv preprint arXiv:2207.11096},
  year   = {2023}
}

Comments

11 pages, 12 figures