X-ray edge problem of graphene

Abstract

The X-ray edge problem of graphene with the Dirac fermion spectrum is studied. At half-filling the linear density of states suppresses the singular response of the Fermi liquid, while away from half-filling the singular features of the Fermi liquid reappear. The crossover behavior as a function of the Fermi energy is examined in detail. The exponent of the power-law absorption rate depends both on the intra- and inter-valley scattering, and it changes as a function of the Fermi energy, which may be tested experimentally.

7 pages, 1 figure

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Cited by in corpus (7)

• Dynamics of Fractionalization in Quantum Spin Liquids
• Topologically ordered zigzag nanoribbon: $e/2$ fractional edge charge, spin-charge separation, and ground state degeneracy
• Soliton fractional charge of disordered graphene nanoribbon
• Photoabsorption spectra and the X-ray edge problem in graphene
• X-ray edge singularity of bilayer graphene
• Relaxation regimes of the holographic electrons at charge neutrality after a local quench of chemical potential
• Theoretical study of X-ray absorption of three-dimensional topological insulator ${\mathrm{Bi}}_2{\mathrm{Se}}_3$