Effect of edge transmission and elastic scattering on the resistance of magnetic barriers

Abstract

Strong magnetic barriers are defined in two-dimensional electron gases by magnetizing dysprosium ferromagnetic platelets on top of a Ga[Al]As heterostructure. A small resistance across the barrier is observed even deep inside the closed regime. We have used semiclassical simulations to explain this behavior quantitatively in terms of a combined effect of elastic electron scattering inside the barrier region and E x B drift at the intersection of the magnetic barrier with the edge of the Hall bar.

7 pages 4 figures

Cited by in corpus (8)

• Multiple magnetic barriers in graphene
• Theory of huge tunneling magnetoresistance in graphene
• Conductance quantization and snake states in graphene magnetic waveguides
• Tomonaga-Luttinger liquid parameters of magnetic waveguides in graphene
• Spin polarization control via magnetic barriers and spin-orbit effects
• 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