Massless Dirac fermions in two dimensions: Confinement in nonuniform magnetic fields

10 Oct 2016 Downing C. A. Portnoi M. E.

We show how it is possible to trap two-dimensional massless Dirac fermions in spatially inhomogeneous magnetic fields, as long as the formed magnetic quantum dot (or ring) is of a slowly decaying nature. It is found that a modulation of the depth of the magnetic quantum dot leads to successive confinement-deconfinement transitions of vortexlike states with a certain angular momentum, until a regime is reached where only states with one sign of angular momentum are supported... (read more)

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Categories


  • MESOSCALE AND NANOSCALE PHYSICS
  • MATHEMATICAL PHYSICS
  • MATHEMATICAL PHYSICS
  • QUANTUM PHYSICS