Density dependence of the rectification of vortex motion in a circular asymmetric channel

作者：Lin N S^*; Misko V R; Heitmann T W; Yu K; Plourde B L T

来源：Physica C-Superconductivity and Its Applications, 2012, 479: 137-139.

DOI：10.1016/j.physc.2011.12.028

• Mesoscopic superconductors
• Corbino disk
• Ratchet effect

We study the rectification of vortex motion in an asymmetric ring channel in a Corbino setup. With an applied ac current, the motion of vortices in the channel is rectified by the asymmetric potential and induces a dc net flow. The net flow in such a system strongly depends on vortex density, and we distinguish %26quot;single-vortex%26apos;%26apos; rectification regime (for low density, when each vortex is rectified individually) determined by the potential-energy landscape inside each cell of the channel and %26quot;multi-vortex%26apos;%26apos;, or %26quot;collective%26apos;%26apos;, rectification (high density case) when the interaction between vortices becomes important.

• 出版日期2012-9