Spin filtering in a hybrid ferromagnetic-semiconductor microstructure

Abstract

We fabricated a hybrid structure in which cobalt and permalloy micromagnets produce a local in-plane spin-dependent potential barrier for high-mobility electrons at the GaAs/AlGaAs interface. Spin effects are observed in ballistic transport in the tens' millitesla range of the external field, and are attributed to switching between Zeeman and Stern-Gerlach modes -- the former dominating at low electron densities.

References in corpus (8)

• Spin Susceptibility of an Ultra-Low Density Two Dimensional Electron System
• Detecting Spin-Polarized Currents in Ballistic Nanostructures
• Spin polarization and g-factor of a dilute GaAs two-dimensional electron system
• Tunable Negative Differential Resistance controlled by Spin Blockade in Single Electron Transistors
• Effect of bulk inversion asymmetry on the Datta-Das transistor
• Non-homogeneous magnetic field induced magnetic edge states and their transport in a quantum wire
• Spin transport in inhomogeneous magnetic fields: a proposal for Stern-Gerlach-like experiments with conduction electrons
• Unidirectional Transmission of Electrons in a Magnetic Field Gradient

Cited by in corpus (9)

• Semiconductor Spintronics
• Coherent single electron spin control in a slanting Zeeman field
• Spinodal nanodecomposition in magnetically doped semiconductors
• Hyperfine interaction induced decoherence of electron spins in quantum dots
• Dynamics of a Quantum Reference Frame
• Exchange-controlled single-electron-spin rotations in quantum dots
• Local Hall effect in hybrid ferromagnetic/semiconductor devices
• Electron optics with dirac fermions: electron transport in monolayer and bilayer graphene through magnetic barrier and their superlattices
• From narrow-gap and semimagnetic semiconductors to spintronics and topological matter: a life with spins