93 citations · 455 across the 18 of their papers we have counts for
6 papers · 1 filter
Scattering of infrared light by dielectric core-shell particles
E. Thiessen, F. X. Bronold, R. L. Heinisch +1
We study the scattering of infrared light by small dielectric core-shell particles taking a sapphire sphere with a CaO core as an example. The extinction efficiency of such a parti…
Scattering of two-dimensional Dirac fermions on gate-defined oscillating quantum dots
C. Schulz, R. L. Heinisch, H. Fehske
Within an effective Dirac-Weyl theory we solve the scattering problem for massless chiral fermions impinging on a cylindrical time-dependent potential barrier. The set-up we consid…
Electron flow in circular graphene quantum dots
C. Schulz, R. L. Heinisch, H. Fehske
We study the electron propagation in a circular electrostatically defined quantum dot in graphene. Solving the scattering problem for a plane Dirac electron wave we identify differ…
Dot-bound and dispersive states in graphene quantum dot superlattices
A. Pieper, R. L. Heinisch, G. Wellein +1
We consider a square lattice configuration of circular gate-defined quantum dots in an unbiased graphene sheet and calculate the electronic, particularly spectral properties of fin…
Electron dynamics in graphene with gate-defined quantum dots
A. Pieper, R. L. Heinisch, H. Fehske
We use numerically exact Chebyshev expansion and kernel polynomial methods to study transport through circular graphene quantum dots in the framework of a tight-binding honeycomb l…
Mie scattering analog in graphene: lensing, particle confinement, and depletion of Klein tunneling
R. L. Heinisch, F. X. Bronold, H. Fehske
Guided by the analogy to Mie scattering of light on small particles we show that the propagation of a Dirac-electron wave in graphene can be manipulated by a circular gated region…