Disorder-induced power-law response of a superconducting vortex on a plane
Abstract
We report drive-response experiments on individual superconducting vortices on a plane, a realization for a (1+1)-dimensional directed polymer in random media. For this we use magnetic force microscopy to image and manipulate individual vortices trapped on a twin boundary in YBa2Cu3O7-δ near optimal doping. We find that when we drag a vortex with the magnetic tip, it moves in a series of jumps. As theory suggests, the jump-size distribution does not depend on the applied force and is consistent with power-law behavior. The measured power is much larger than widely accepted theoretical calculations. © 2015 American Physical Society.
Date Published
Journal
Physical Review B - Condensed Matter and Materials Physics
Volume
92
Issue
10
URL
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942531825&doi=10.1103%2fPhysRevB.92.100501&partnerID=40&md5=ef7eaece6968de47bcfdb1d788fedbe2
DOI
10.1103/PhysRevB.92.100501
Research Area
Group (Lab)
Brad Ramshaw Group
Funding Source
1897/14
268294