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Interacting Dirac materials.

S Banerjee1,2,3, D S L Abergel2, H Ågren3,4

  • 1Theoretical Physics III, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, 86135 Augsburg Germany.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|May 23, 2020
PubMed
Summary
This summary is machine-generated.

Interactions in Dirac materials affect both fermionic and bosonic quasiparticles. Long-range interactions increase the Dirac cone slope, while short-range interactions decrease it, offering insights into Dirac material behavior.

Keywords:
Dirac bosonsFermi liquidperturbation theory

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Mechanics

Background:

  • Dirac materials exhibit unique electronic properties due to their conical band structure.
  • Understanding the impact of interactions on these quasiparticles is crucial for materials design.

Purpose of the Study:

  • To investigate universal behaviors of interacting fermionic and bosonic Dirac quasiparticles.
  • To analyze how different interaction types renormalize the Dirac spectrum.

Main Methods:

  • Perturbative renormalization analysis.
  • Calculation of self-energy for quasiparticles under various interactions.
  • Literature review and collation of existing results.

Main Results:

  • Common features in interaction-induced renormalization of the Dirac spectrum for both quasiparticle types.
  • Long-range interactions generally increase the Dirac cone slope.
  • Short-range interactions generally decrease the Dirac cone slope.
  • Quasiparticle statistics impact short-range interactions more significantly.

Conclusions:

  • Interaction type (long-range vs. short-range) dictates the renormalization of the Dirac cone slope.
  • Quasiparticle statistics play a role in the self-energy corrections, especially for short-range interactions.
  • Potential for a universal description of Dirac materials based on these findings.