Aharonov-Bohm oscillations in p-type GaAs quantum rings
arXiv:0711.0489 · doi:10.1016/j.physe.2007.08.129
Abstract
We have explored phase coherent transport of holes in two p-type GaAs quantum rings with orbital radii 420 nm and 160 nm fabricated with AFM oxidation lithography. Highly visible Aharonov-Bohm (AB) oscillations are measured in both rings, with an amplitude of the oscillations exceeding 10% of the total resistance in the case of the ring with a radius of 160 nm. Beside the h/e oscillations, we resolve the contributions from higher harmonics of the AB oscillations. The observation of a local resistance minimum at B=0 T in both rings is a signature of the destructive interference of the holes' spins. We show that this minimum is related to the minimum in the h/2e oscillations.
Proceedings of EP2DS-17, Genova 2007; Accepted for Physica E; 3 pages, 3 figures
References in corpus (5)
- Direct observation of the Aharonov-Casher phase
- Experimental demonstration of the time reversal Aharonov-Casher effect
- Aharonov-Bohm Oscillations with Spin: Evidence for Berry's Phase
- Conductance fluctuations in diffusive rings: Berry phase effects and criteria for adiabaticity
- Strong Aharonov-Bohm oscillations in GaAs two-dimensional holes
Cited by in corpus (7)
- Preformed pairs in flat Bloch bands
- Resonant inverse Faraday effect in nanorings
- Lorentz force effects for graphene Aharonov-Bohm interferometers
- Quantum coherent control of nonlinear thermoelectric transport in a triple-dot Aharonov-Bohm heat engine
- Confined electron states in two-dimensional HgTe in magnetic field: Quantum-dot versus quantum-ring behavior
- Anomalous magnetotransport through reflection-symmetric artificial molecules
- Topological Bardeen-Cooper-Schrieffer theory of superconducting quantum rings