Topological transitions in spin interferometers
arXiv:1412.5487 · doi:10.1103/PhysRevB.91.241406
Abstract
We show that topological transitions in electronic spin transport are feasible by a controlled manipulation of spin-guiding fields. The transitions are determined by the topology of the fields texture through an effective Berry phase (related to the winding parity of spin modes around poles in the Bloch sphere), irrespective of the actual complexity of the nonadiabatic spin dynamics. This manifests as a distinct dislocation of the interference pattern in the quantum conductance of mesoscopic loops. The phenomenon is robust against disorder, and can be experimentally exploited to determine the magnitude of inner spin-orbit fields.
5 pages, 5 figures. Revision: the effective Berry phase linked to winding parity of spin modes around poles in the Bloch sphere
References in corpus (11)
- Kwant: a software package for quantum transport
- Spin interference effects in ring conductors subject to Rashba coupling
- 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
- Giant spin-orbit splitting in a HgTe quantum well
- Aharonov-Bohm oscillations in the presence of strong spin-orbit interactions
- Competition between Spin-Orbit Interaction and Zeeman Coupling in Rashba 2DEGs
- Optimal block-tridiagonalization of matrices for coherent charge transport
- Signatures of spin-related phases in transport through regular polygons
- Aharonov-Casher effect in quantum ring ensembles
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- Geometry-assisted topological transitions in spin interferometry
- Spin interferometry in anisotropic spin-orbit fields
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- Arbitrary qubit transformations on tuneable Rashba rings
- Superconductivity in doped triangular Mott insulators: the roles of parent spin backgrounds and charge kinetic energy
- Exotic dynamical evolution in a secant-pulse driven quantum system
- Geometric vector potentials from non-adiabatic spin dynamics
- Spin dynamics under the influence of elliptically rotating fields: Extracting the field topology from time-averaged quantities
- A quantum-network approach to spin interferometry driven by Abelian and non-Abelian fields
- Exact unitary transformation for Rashba rings in magnetic and electric fields
- Effective geometric phases and topological transitions in SO(3) and SU(2) rotations
- Spin interference effects in Rashba quantum rings
- Effects of geometry on spin-orbit Kramers states in semiconducting nanorings
- Effects of noise on fidelity in spin-orbit qubit transformations