4 papers
Optoelectronic Fingerprints of Interference between Different Charge Carriers in Graphene Superlattices and Analogies to Twisted Graphene Bilayers
Saúl A. Herrera, Gerardo G. Naumis
Motivated by recent experimental findings on the low-energy spectrum of Kekulé-patterned graphene, the optoelectronic signatures of graphene superlattices with a spatial modulation…
Dynamic polarization and plasmons in kekulé-patterned graphene: Signatures of the broken valley degeneracy
Saúl A. Herrera, Gerardo G. Naumis
The dynamic polarization for kekulé-patterned graphene is studied within the Random Phase Approximation (RPA). It is shown how the breaking of the valley degeneracy by the lattice…
Electronic and optical conductivity of kekulé-patterned graphene: Intravalley and intervalley transport
Saúl A. Herrera, Gerardo G. Naumis
A Kubo formalism is used to calculate the electronic and optical conductivity of a graphene superlattice with Y-shaped kekulé bond texture, similar to that visualized in recent exp…
Kubo conductivity for anisotropic tilted Dirac semimetals and its application to 8-Pmmn borophene: The role of different frequency, temperature and scattering limits
Saúl A. Herrera, Gerardo G. Naumis
The electronic and optical conductivities for anisotropic tilted Dirac semimetals are calculated using the Kubo formula. As in graphene, it is shown that the minimal conductivity i…