We study scattering on an ultra-low potential in armchair graphene nanoribbon. Using the
continuous Dirac model and including a couple of artificial waves in the scattering process …

Scattering on an ultralow potential in an armchair graphene nanoribbon is studied. Using
the continuous Dirac model and including a couple of artificial waves in the scattering …

Symmetric and anti-symmetric trapped modes in a cylindrical tube with a segment of higher
density are studied. The problem is reduced to an eigenvalue problem of the spatial …