Quantum Rings with Rashba spin orbit coupling: a path integral approach

Abstract

We employ a path integral real time approach to compute the DC conductance and spin polarization for electrons transported across a ballistic Quantum Ring with Rashba spin-orbit interaction. We use a piecewise semiclassical approximation for the particle orbital motion and solve the spin dynamics exactly, by accounting for both Zeeman coupling and spin-orbit interaction at the same time. Within our approach, we are able to study how the interplay between Berry phase, Ahronov Casher phase, Zeeman interaction and weak localization corrections influences the quantum interference in the conductance within a wide range of externally applied fields. Our results are helpful in inerpreting recent measurements on interferometric rings.

14 pages, 9 figures; Sec.VIII rewritten. Various minor modifications in the rest of the paper. Published version except for some, minor, grammatical corrections

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Cited by in corpus (9)

• Quantum transport in Rashba spin-orbit materials: A review
• Mesoscopic rings with Spin-Orbit interactions
• Anomalous Josephson Effect in S/SO/F/S heterostructures
• Aharonov-Casher and spin Hall effects in two-dimensional mesoscopic ring structures with strong spin-orbit interaction
• VASP2KP: kp models and Lande g-factors from ab initio calculations
• What can we learn about the dynamics of transported spins by measuring shot noise in spin-orbit-coupled nanostructures?
• Control of Josephson current by Aharonov-Casher Phase in a Rashba Ring
• Current-Conserving Aharonov-Bohm Interferometry with Arbitrary Spin Interactions
• Time-resolved quantum spin transport through an Aharonov-Casher ring