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Tilt-induced many-body corrections to optical conductivity of tilted Dirac cone materials

Jalali Mola, Z ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1103/PhysRevB.104.085152
  3. Publisher: American Physical Society , 2021
  4. Abstract:
  5. Katsnelson has shown that, within the Fermi-liquid approach, the optical conductivity of Dirac electrons in graphene is not affected by many-body interactions [M. I. Katsnelson, Eur. Phys. Lett. 84, 37001 (2008)EULEEJ0295-507510.1209/0295-5075/84/37001]. We show that, when the Dirac cone is tilted, the Fermi-liquid corrections arise in the optical conductivity in a manner that the correction depends on the angle between the electric field of the incident light and the tilt direction. Therefore the mapping of the optical conductivity for various directions of the incident light enables a determination of the many-body effect in the optical conductivity spectrum of the two-dimensional tilted Dirac cone materials. © 2021 American Physical Society
  6. Keywords:
  7. Electric fields ; Fermi liquids ; Fermions ; Graphene ; Dirac cones ; Dirac electrons ; Incident light ; Many-body corrections ; Many-body effect ; Many-body interactions ; Optical conductivity spectra ; Optical conductivity
  8. Source: Physical Review B ; Volume 104, Issue 8 , August , 2021 ; 24699950 (ISSN)
  9. URL: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.104.085152