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Electron transport through a spin-orbit-coupled quantum ring is investigatedwithin linear response theory. We show that the finite width of the ringresults in the appearance of Fano resonances in the conductance. This turns outto be a consequence of the spin-orbit interaction that leads to a breaking ofthe parity of the states localized in the ring. The resonances appear when thesystem is close to maxima of Aharonov-Casher conductance oscillations wherespin transfer is heavily modified. When the spin-orbit coupling strength isdetuned from the Aharonov-Casher maxima the resonances are broadened resultingin a dependence of the spin transport on the electron Fermi energy in contrastto predictions from one-dimensional models

Fano resonances and electron spin transport through a two-dimensional spin-orbit-coupled quantum ring