Spin effects in the magneto-drag between double quantum wells

Abstract

We report on the selectivity to spin in a drag measurement. This selectivity to spin causes deep minima in the magneto-drag at odd fillingfactors for matched electron densities at magnetic fields and temperatures at which the bare spin energy is only one tenth of the temperature. For mismatched densities the selectivity causes a novel 1/B-periodic oscillation, such that negative minima in the drag are observed whenever the majority spins at the Fermi energies of the two-dimensional electron gasses (2DEGs) are anti-parallel, and positive maxima whenever the majority spins at the Fermi energies are parallel.

4 pages, 3 figures

Cited by in corpus (18)

• Coulomb drag
• Anomalous Coulomb drag in electron-hole bilayers
• Giant Fluctuations of Coulomb Drag in a Bilayer System
• Counterflow of electrons in two isolated quantum point contacts
• Coulomb drag between ballistic quantum wires
• Frictional magneto-Coulomb drag in graphene double-layer heterostructure
• Coulomb drag in high Landau levels
• Magnetotransport of electrons in quantum Hall systems
• Coulomb Drag as a Probe of the Nature of Compressible States in a Magnetic Field
• Hysteresis in the quantum Hall regimes in electron double quantum well structures
• Observation of the screening signature in the lateral photovoltage of electrons in the Quantum Hall regime
• Sign-reversal of drag in bilayer systems with in-plane periodic potential modulation
• Engineering drag currents in Coulomb coupled quantum dots
• Magnetospectroscopy of symmetric and anti-symmetric states in double quantum wells
• Semiclassical theory of electron drag in strong magnetic fields
• Frictional magnetodrag between spatially separated two-dimensional electron systems: Coulomb versus phonon mediated electron-electron interaction
• Tunneling Characteristics of an Electron-Hole Trilayer under an In-plane Magnetic Field
• The physical picture behind the oscillating sign of drag in high Landau levels