Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-03-24
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
10.1209/epl/i2004-10093-9
We present a theoretical and experimental study of the peak effect in the surface pinning of vortices. It is associated with a sharp transition in the vortex slippage length which we relate to a crossover from a weakly disordered crystal to a surface glass state. Experiments are performed on ion-beam etched Nb crystals. The slippage length is deduced from 1kHz-1MHz linear AC penetration depth measurements.
Bellessa Joel
Lutke-Entrup Norbert
Mathieu Patrice
Plaçais Bernard
Simon Yvan
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