Transport of magnetic vortices by surface acoustic waves

Details Transport of magnetic vortices by surface acoustic waves Transport of magnetic vortices by surface acoustic waves

2006-04-10

arxiv.org/abs/cond-mat/0604254v1

Physics

Condensed Matter

Superconductivity

submitted

Scientific paper

10.1016/j.ssc.2007.02.018

In a thin film of superconducting YBCO the impact of surface acoustic waves (SAWs) traveling on the piezoelectric substrate is investigated. A pronounced interaction between the ultrasonic waves and the vortex system in the type II superconductor is observed. The occurrence of a SAW-induced dc voltage perpendicular to the sound path is interpreted as {\em dynamic pinning} of vortices by the piezoacoustic SAW, which acts as a conveyor for the fluxquanta. Its antisymmetry with respect to the magnetic field directly evidences the induced, directed flux motion.This dynamic manipulation of vortices can be seen as an important step towards flux-based electronic devices.

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