Confined magnetic guiding orbit states

Abstract

We show how snake-orbit states which run along a magnetic edge can be confined electrically. We consider a two-dimensional electron gas (2DEG) confined into a quantum wire, subjected to a strong perpendicular and steplike magnetic field $B/-B$. Close to this magnetic step new, spatially confined bound states arise as a result of the lateral confinement and the magnetic field step. The number of states, with energy below the first Landau level, increases as $B$ becomes stronger or as the wire width becomes larger. These bound states can be understood as an interference between two counter-propagating one-dimensional snake-orbit states.

4 pages, 4 figures

References in corpus (4)

• Snake orbits and related magnetic edge states
• Electron scattering on circular symmetric magnetic profiles in a two-dimensional electron gas
• Resistance effects due to magnetic guiding orbits
• Non-homogeneous magnetic field induced magnetic edge states and their transport in a quantum wire

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