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Electron transport through the Corbino disk in graphene is studied in thepresence of uniform magnetic fields. At the Dirac point, we observe conductanceoscillations with the flux piercing the disk area $\Phi_d$, characterized bythe period $\Phi_0=(2h/e)\ln(R_o/R_i)$, where $R_o$ ($R_i$) is the outer(inner) disk radius. The oscillations magnitude increase with the radii ratioand exceed 10% of the average conductance for $R_o/R_i\geqslant 5$ in the caseof the normal Corbino setup, or for $R_o/R_i\geqslant 2.2$ in the case of theAndreev-Corbino setup. At a finite but weak doping, the oscillations stillappear in a limited range of $|\Phi_d|\leqslant\Phi_d^{max}$, away from whichthe conductance is strongly suppressed. At large dopings and weak fields weidentify the crossover to a normal ballistic transport regime.

Magnetoconductance of the Corbino disk in graphene