Acoustic analog of Hall effect in superconductive films
E.D.Gutliansky
TL;DR
This paper demonstrates an acoustic analog of the Hall effect in superconductive films, where surface acoustic waves induce vortex motion and generate a longitudinal DC field, independent of magnetic field direction.
Contribution
It introduces the concept of an acoustic Hall effect in superconductive films and provides theoretical calculations that match experimental data.
Findings
SAW drags vortices in superconductive films, creating a DC field
The effect is independent of external magnetic field direction
Theoretical calculations agree with experimental results
Abstract
Longitudinal electric field of a surface acoustic wave (SAW) drags vortex structure of a superconductive film, deposited on a piezoelectric substrate, and generates longitudinal DC component of an acoustoelectric field, which does not depend on direction of an external magnetic field. The contra-directional vortices are dragged by SAW in opposite directions. This phenomenon represents an acoustic analog of Hall effect, where vortices are an analog of current carriers, and the SAW Pointing vector acts as an impressed electric field. The calculation of the acoustoelectric field for a YBCO film with niobate lithium substrate coincides well with experimental data.
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Taxonomy
TopicsScientific Research and Discoveries · Neural Networks and Applications · Magnetic Field Sensors Techniques