title: Nonlinear nanodevices using magnetic flux quanta.
abstract: All devices realized so far that control the motion of magnetic flux quanta employ either samples with nanofabricated spatially-asymmetric potentials (which strongly limit controllability), or pristine superconductors rectifying with low-efficiency time-asymmetric oscillations of an external magnetic field. Using layered Bi2Sr2CaCu2O8+delta materials, here we fabricate and simulate two efficient nonlinear superconducting devices with no spatial asymmetry. These devices can rectify with high-efficiency a two-harmonic external current dragging vortices in target directions by changing either the relative phase or the frequency ratio of the two harmonics.
authors.affiliation: National Institute for Materials Science, Sengen 1-2-1, Tsukuba, Ibaraki 305-0047, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Ooi
authors.forename: Sergey
authors.initials: S
authors.lastname: Savel'ev
authors.forename: M B
authors.initials: MB
authors.lastname: Gaifullin
authors.forename: T
authors.initials: T
authors.lastname: Mochiku
authors.forename: K
authors.initials: K
authors.lastname: Hirata
authors.forename: Franco
authors.initials: F
authors.lastname: Nori