Rashba Spin Interferometer
Ming-Hao Liu, Kuo-Wei Chen, Son-Hsien Chen, and Ching-Ray Chang

TL;DR
This paper proposes a Rashba spin interferometer design combining a 1D wire and half-ring, deriving analytical expressions for spin interference spectra influenced by Rashba coupling, quantum rotation, geometric, and beating effects.
Contribution
It introduces a novel Rashba spin interferometer design and provides analytical models for its spin interference spectrum based on Rashba coupling effects.
Findings
Identification of quantum 4pi rotation effect in spin interference
Observation of geometric and Shubnikov-de Haas-like beating effects
Analytical expressions describing spin interference spectrum
Abstract
A spin interferometer utilizing the Rashba effect is proposed. The novel design is composed of a one-dimensional (1D) straight wire and a 1D half-ring. By calculating the norm of the superposed wave function, we derive analytical expressions to describe the spin interference spectrum as a function of the Rashba coupling strength. Presented spin interference results are identified to include (i) the quantum-mechanical 4pi rotation effect, (ii) geometric effect, and (iii) Shubnikov-de Haas-like beating effect.
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