The effect of sublattice symmetry breaking on the electronic properties of a doped graphene

Abstract

Motivated by a number of recent experimental studies, we have carried out the microscopic calculation of the quasiparticle self-energy and spectral function in a doped graphene when a symmetry breaking of the sublattices is occurred. Our systematic study is based on the many-body G${}_0$W approach that is established on the random phase approximation and on graphene's massive Dirac equation continuum model. We report extensive calculations of both the real and imaginary parts of the quasiparticle self-energy in the presence of a gap opening. We also present results for spectral function, renormalized Fermi velocity and band gap renormalization of massive Dirac Fermions over a broad range of electron densities. We further show that the mass generating in graphene washes out the plasmaron peak in spectral weight.

22 Pages, 10 Figures

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Cited by in corpus (13)

• Many-body effects in van der Waals-Casimir interaction between graphene layers
• Robust zero-averaged wave-number gap inside gapped graphene superlattices
• Anisotropic RKKY interaction in spin polarized graphene
• Quasiparticle band-gap renormalization in doped monolayer MoS${}_2$
• Finite temperature dynamical polarization and plasmons in gapped graphene
• Effect of electron-phonon coupling on energy and density of states renormalizations of dynamically screened graphene
• Temperature dependent screened electronic transport in gapped graphene
• Plasma excitations of dressed Dirac electrons in graphene layers
• Quantum capacitance of double-layer graphene
• Coulomb interaction and semimetal-insulator transition in graphene
• Many-body exchange-correlation effects in MoS${}_2$ monolayer: The key role of nonlocal dielectric screening
• Temperature dependence of the paramagnetic spin susceptibility of doped graphene
• Composite quasiparticles in strongly-correlated dipolar Fermi liquids