579 citations · 1.1k across the 16 of their papers we have counts for
16 papers
Coherent states for dispersive pseudo-Landau-levels in strained honeycomb lattices
Erik Díaz-Bautista, Maurice Oliva-Leyva
Dirac fermions in graphene may experiment dispersive pseudo-Landau levels due to a homogeneous pseudomagnetic field and a position-dependent Fermi velocity induced by strain. In th…
Coherent states for graphene under the interaction of crossed electric and magnetic fields
Miguel Castillo-Celeita, Erik Díaz-Bautista, Maurice Oliva-Leyva
We construct the coherent states for charge carriers in a graphene layer immersed in crossed external electric and magnetic fields. For that purpose, we solve the Dirac-Weyl equati…
Effective magnetic field induced by inhomogeneous Fermi velocity in strained honeycomb structures
M. Oliva-Leyva, J. E. Barrios-Vargas, G. Gonzalez de la Cruz
In addition to the known pseudomagnetic field, nonuniform strains independently induce a position-dependent Fermi velocity (PDFV) in graphene. Here we demonstrate that, due to the…
Coherent states in magnetized anisotropic 2D Dirac materials
Erik Díaz-Bautista, Maurice Oliva-Leyva, Yajaira Concha-Sánchez +1
In this work, we construct coherent states for electrons in anisotropic 2D Dirac materials immersed in a uniform magnetic field perpendicularly oriented to the sample. In order to…
Unveiling optical in-plane anisotropy of 2D materials from oblique incidence of light
Maurice Oliva-Leyva, Gerardo Gonzalez de la Cruz
In this work, we present a theoretical study of the dispersion of linearly polarized light between two dielectric media separated by an anisotropic two-dimensional (2D) material un…
Theory for strained graphene beyond the Cauchy-Born rule
Maurice Oliva-Leyva, Chumin Wang
The low-energy electronic properties of strained graphene are usually obtained by transforming the bond vectors according to the Cauchy-Born rule. In this work, we derive a new eff…
Magneto-optical conductivity of anisotropic two-dimensional Dirac-Weyl materials
Maurice Oliva-Leyva, Chumin Wang
In the presence of an external magnetic field, the optical response of two-dimensional materials, whose charge carriers behave as massless Dirac fermions with arbitrary anisotropic…
Low-energy theory for strained graphene: an approach up to second-order in the strain tensor
Maurice Oliva-Leyva, Chumin Wang
An analytical study of low-energy electronic excited states in an uniformly strained graphene is carried out up to second-order in the strain tensor. We report an new effective Dir…
Electronic and optical properties of strained graphene and other strained 2D materials: a review
Gerardo G. Naumis, Salvador Barraza-Lopez, Maurice Oliva-Leyva +1
This review presents the state of the art in strain and ripple-induced effects on the electronic and optical properties of graphene. It starts by providing the crystallographic des…
Effective Dirac Hamiltonian for anisotropic honeycomb lattices: optical properties
M. Oliva-Leyva, Gerardo G. Naumis
We derive the low-energy Hamiltonian for a honeycomb lattice with anisotropy in the hopping parameters. Taking the reported Dirac Hamiltonian for the anisotropic honeycomb lattice,…
Sound waves induce Volkov-like states, band structure and collimation effect in graphene
M. Oliva-Leyva, G. G. Naumis
We find exact states of graphene quasiparticles under a time-dependent deformation (sound wave), whose propagation velocity is smaller than the Fermi velocity. To solve the corresp…
Tunable dichroism and optical absorption of graphene by strain engineering
M. Oliva-Leyva, Gerardo G. Naumis
We theoretically study the transmittance for normal incidence of linearly polarized light between two media separated by a strained graphene monolayer. We analytically characterize…
Generalizing the Fermi velocity of strained graphene from uniform to nonuniform strain
M. Oliva-Leyva, Gerardo G. Naumis
The relevance of the strain-induced Dirac point shift to obtain the appropriate anisotropic Fermi velocity of strained graphene is demonstrated. Then a critical revision of the ava…
Anisotropic AC conductivity of strained graphene
M. Oliva-Leyva, Gerardo G. Naumis
The density of states and the AC conductivity of graphene under uniform strain are calculated using a new Dirac Hamiltonian that takes into account the main three ingredients that…
Understanding electron behavior in strained graphene as a reciprocal space distortion
M. Oliva-Leyva, G. G. Naumis
The behavior of electrons in strained graphene is usually described using effective pseudomagnetic fields in a Dirac equation. Here we consider the particular case of a spatially c…
Uniform pseudomagnetic fields in graphene: corrections due to lattice deformations
M. Oliva-Leyva, Gerardo G. Naumis
Very recently, the standard description of electrons in strained graphene has been completed by the explicit inclusion of the lattice deformation. Here, the effect of these lattice…