Quantized magnetic confinement in quantum wires
arXiv:0907.1802 · doi:10.1103/PhysRevLett.104.186801
Abstract
Ballistic quantum wires are exposed to longitudinal profiles of perpendicular magnetic fields composed of a spike (magnetic barrier) and a homogeneous part. An asymmetric magnetoconductance peak as a function of the homogeneous magnetic field is found, comprising quantized conductance steps in the interval where the homogeneous magnetic field and the magnetic barrier have identical polarities, and a characteristic shoulder with several resonances in the interval of opposite polarities. The observations are interpreted in terms of inhomogeneous diamagnetic shifts of the quantum wire modes leading to magnetic confinement.
4 pages, 3 figures
References in corpus (9)
- The electronic properties of graphene
- Magnetic confinement of massless Dirac fermions in graphene
- Effect of edge transmission and elastic scattering on the resistance of magnetic barriers
- Transport in two-dimensional electron gas narrow channel with a magnetic field gradient
- Confined magnetic guiding orbit states
- Magnetic Quantum Dot: A Magnetic Transmission Barrier and Resonator
- Resonant reflection at magnetic barriers in quantum wires
- Influence of magnetic field offsets on the resistance of magnetic barriers in two-dimensional electron gases
- Magnetic barrier induced conductance fluctuations in quantum wires
Cited by in corpus (9)
- Magnetic scattering of Dirac fermions in topological insulators and graphene
- Snaking states on a cylindrical surface in a perpendicular magnetic field
- Signatures of Wigner molecule formation in interacting Dirac fermion quantum dots
- Observation of quantum states without a semiclassical equivalence bound by a magnetic field gradient
- Electronic properties of quantum dots formed by magnetic double barriers in quantum wires
- Effect of tilted magnetic field on magnetosubbands and conductance of bi-layer quantum wire
- Emergent flat band lattices in spatially periodic magnetic fields
- Cross-over between Magnetic and Electric Edges in Quantum Hall Systems
- Quantum transport through pairs of edge states of opposite chirality at electric and magnetic boundaries