A quadratic pseudospectrum framework finds approximate joint eigenvectors of the Hamiltonian and translation operators to produce unfolded band structures in aperiodic and finite systems.
Electronic State Unfolding for Plane Waves: Energy Bands, Fermi Surfaces, and Spectral Functions,
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Band Unfolding via the Quadratic Pseudospectrum
A quadratic pseudospectrum framework finds approximate joint eigenvectors of the Hamiltonian and translation operators to produce unfolded band structures in aperiodic and finite systems.