Heller Group

Sliding "Mechanism"

Sliding along the linear dispersion of graphene's Dirac cone is responsible for graphene's bright 2D Raman peak.
Raman Scattering in Carbon Nanosystems: Solving Polyacetylene

The polyacetylene spectroscopy is worked out with Kramers−Heisenberg−Dirac theory.
Branched Electron Flow

Theoretical flow of electrons in a two dimensional electron gas away from an electron source at the center.
Dynamics of a System with Two Degrees of Freedom

Non-chaotic two-dimensional systems live on the surface of two-dimensional torus, embedded in the four dimensional space.
Resonant Cavity

Electron waves resonating in a cavity formed by the curved and straight lines.
Electron Flow in a Two-Dimensional Electron Gas

Electron flow branches when riding over a bumpy landscape, such as those encountered in a 2DEG.