Mapping the dynamic interactions between vortex species in highly anisotropic superconductors
M. Tesei (1), G. K. Perkins (1), A. D. Caplin (1), L. F. Cohen (1) and, T. Tamegai (2) ((1) The Blackett Laboratory, Imperial College London, UK, (2), Department of Applied Physics, The University of Tokyo, Japan)
TL;DR
This study investigates the dynamic interactions between different vortex species in highly anisotropic high-temperature superconductors using magnetization measurements, revealing a high-temperature regime that informs vortex-based device applications.
Contribution
The paper provides new experimental insights into vortex interactions in anisotropic superconductors and maps the conditions for vortex ratchets and fluxonic device functionalities.
Findings
Identification of a high-temperature vortex interaction regime
Mapping of parameter space for vortex ratchet applications
Experimental evidence of vortex dynamics in anisotropic superconductors
Abstract
Here we use highly sensitive magnetisation measurements performed using a Hall probe sensor on single crystals of highly anisotropic high temperature superconductors to study the dynamic interactions between the two species of vortices that exist in such superconductors. We observe a remarkable and clearly delineated high temperature regime that mirrors the underlying vortex phase diagram. Our results map out the parameter space over which these dynamic interaction processes can be used to create vortex ratchets, pumps and other fluxonic devices.
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