Abstract
A vortex lattice ratchet effect has been investigated in films grown on arrays of nanometric triangles, which induce periodic asymmetric pinning potentials. The vortex lattice motion yields a net dc voltage when an ac driving current is applied to the sample and the vortex lattice moves through the field of asymmetric potentials. This ratchet effect is studied taking into account the array geometry, the temperature, the number of vortices per unit cell of the array, and the applied ac currents.
- Received 4 June 2004
DOI:https://doi.org/10.1103/PhysRevB.71.024519
©2005 American Physical Society