Identifying signatures of the electron-phonon interaction in 2D and 3D Dirac-like materials

dc.contributor.advisorNicol, Elisabeth + "J."
dc.contributor.authorPavlovic, Boris of Physicsen_US of Guelphen_US of Scienceen_US
dc.description.abstractRecently, interest has been directed toward identifying and characterizing materials with 3D Dirac-like energy dispersions. Using a 3D version of the 2D Dirac-Weyl Hamiltonian, which has been used to describe the low energy physics of the 2D Dirac fermions found in graphene, we present our theoretical results for the electron self-energy of the 3D Dirac cone with the inclusion of an electron-phonon interaction (EPI). Employing a Holstein model for the EPI and allowing for varying chemical potential, bandwidth, and electron-phonon mass renormalization, we show how the self-energy modifies the electronic density of states and in turn the optical conductivity. The results for 3D are contrasted with the 2D case, as previously explored for graphene. Our results identify signatures of the EPI which can be used as a tool to understand experimental results probing the optical response and electronic properties of 3D analogues to the 2D Dirac fermions in graphene.en_US
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subject3D Diracen_US
dc.subjectOptical Responseen_US
dc.subjectOptical Conductivityen_US
dc.subjectElectron Phonon Interactionen_US
dc.subjectSelf Energyen_US
dc.subjectKubo Formulaen_US
dc.subjectDensity of States Renormalizationen_US
dc.subjectDirac Coneen_US
dc.subjectTheoretical Condensed Matter Physicsen_US
dc.subjectMigdal Approximationen_US
dc.titleIdentifying signatures of the electron-phonon interaction in 2D and 3D Dirac-like materialsen_US
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