Researchers pull back the quantum curtain on 'Weylfermions' northeastern NatureComms
as the displacements of super lattice sites. We can write the Hamiltonian on the supercell basis as
$${H}_{0,SC}= \mathop{\sum}\limits_{i} \frac{-A}{4}\left[{c}_{i}{\,\!}^{{{{\dagger}}} }{\tau }_{0}{d}_{i+\hat{z}}+{c}_{i}{\,\!}^{{{{\dagger}}} }{\tau }_{0}{d}_{i-\hat{x}-\hat{z}}-{c}_{i}{\,\!}^{{{{\dagger}}} }{\tau }_{0}{d}_{i-\hat{z}}-{c}_{i}{\,\!}^{{{{\dagger}}} }{\tau }_{0}{d}_{i-\hat{x}+\hat{z}}\right.\\ +\left.
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