We study the dynamic properties of the vortex solid driven by a radial current I in the Corbino-disk (CD) of a thick amorphous (a-)MoxSi1-x film with moderately strong pinning and a thick a-MoxGe1-x film with weaker pinning. In CD, vortices rotate around the center of the sample by feeling a Lorentz force fL inversely proportional to the radius r of rotation. We measure the voltages, V(r12) and V(r23 ), induced at the two voltage probes placed radially (r12< r23), as a function of fL (or I). For both films the initial dynamic state of driven solid is the plastic flow, indicating significant pinning effects. For the a-MoxSi1-x film the large difference between V(r12) and V(r23 ) is observed at lowest I, which is attributed to the stronger pinning effects in the a-MoxSi1-x film.
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