Electron momentum densities near Dirac cones: Anisotropic Umklapp scattering and momentum broadening

Abstract The relationship between electron momentum densities (EMDs) and a band gap is clarified in momentum space. The interference between wavefunctions via reciprocal lattice vectors, making a band gap in momentum space, causes the scattering of electrons from the first Brillouin zone to the othe...

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Bibliographic Details
Main Authors: N. Hiraoka, T. Nomura
Format: Article
Language:English
Published: Nature Publishing Group 2017-04-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-017-00628-4