Quantum interference of electrons in a ring: tuning of the geometrical phase

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dc.creatorCapozza, R.
dc.creatorGiuliano, D.
dc.creatorLucignano, P.
dc.creatorTagliacozzo, A.
dc.date2005-05-11
dc.date2005-11-29
dc.date.accessioned2026-07-07T06:37:46Z
dc.date.available2026-07-07T06:37:46Z
dc.descriptionWe calculate the oscillations of the DC conductance across a mesoscopic ring, simultaneously tuned by applied magnetic and electric fields orthogonal to the ring. The oscillations depend on the Aharonov-Bohm flux and of the spin-orbit coupling. They result from mixing of the dynamical phase, including the Zeeman spin splitting, and of geometric phases. By changing the applied fields, the geometric phase contribution to the conductance oscillations can be tuned from the adiabatic (Berry) to the nonadiabatic (Ahronov-Anandan) regime. To model a realistic device, we also include nonzero backscattering at the connection between ring and contacts, and a random phase for electron wavefunction, accounting for dephasing due to disorder.
dc.description4 pages, 3 figures, minor changes
dc.identifierhttps://arxiv.org/abs/cond-mat/0505273
dc.identifierhttp://arxiv.org/abs/cond-mat/0505273
dc.identifierPhys. Rev. Lett. 95, 226803 (2005)
dc.identifierdoi:10.1103/PhysRevLett.95.226803
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/100509
dc.subjectMesoscale and Nanoscale Physics
dc.titleQuantum interference of electrons in a ring: tuning of the geometrical phase
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