Electron flow in circular graphene quantum dots
C. Schulz, R. L. Heinisch, and H. Fehske
TL;DR
This paper investigates how electrons propagate in circular graphene quantum dots, analyzing scattering regimes, resonant effects, and electron trapping based on dot parameters and electron energy.
Contribution
It introduces a detailed scattering analysis for Dirac electrons in circular graphene quantum dots, highlighting resonant scattering and trapping phenomena.
Findings
Identification of different scattering regimes
Resonant scattering effects in quantum dots
Electron trapping within the dot
Abstract
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 different scattering regimes depending on the radius and potential of the dot as well as the electron energy. Thereby, our particular focus lies on resonant scattering and the temporary electron trapping in the dot.
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