The Nielsen-Ninomiya theorem, dubbed `fermion-doubling', poses a problem for the naive discretization of single (massless) Dirac cone on two-dimensional surface. inevitable appearance an additional, unphysical fermionic mode can, example, be circumvented by introducing extra dimension to spatially separate cones. In this work, we propose geometry-independent protocol based tight-binding model t...

We present the first application of time-dependent density functional tight-binding method to rationalize photo-induced electron transfer in an experimental hexyl-protected Au25 cluster labeled with a pyrene fluorophore.