Strongly coupled modes in bi-waveguides based on graphene
CEP Villegas, MRS Tavares - Solid state communications, 2010 - Elsevier
We theoretically study the confined (guided) subbands (modes) in strongly coupled double
waveguides based on graphene. We find the spectra of the two-dimensional (2D) Dirac-like
Hamiltonian with a quasi-mass parameter β, which is incorporated into the Hamiltonian in an
ad hoc manner. Such a term can represent phenomenologically the spin–orbit interaction
strength in the graphene sample. We found strongly coupled modes as the wavevector ky
increased. We show that different choices for the parameter β in both waveguides induce …
waveguides based on graphene. We find the spectra of the two-dimensional (2D) Dirac-like
Hamiltonian with a quasi-mass parameter β, which is incorporated into the Hamiltonian in an
ad hoc manner. Such a term can represent phenomenologically the spin–orbit interaction
strength in the graphene sample. We found strongly coupled modes as the wavevector ky
increased. We show that different choices for the parameter β in both waveguides induce …
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