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Reconfigurable Pinwheel Artificial-Spin-Ice and Superconductor Hybrid Device
Yang-Yang Lyu1,2, Xiaoyu Ma3, Jing Xu4
1Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China.
Nano Letters
|November 30, 2020
Summary
Artificial-spin-ice structures control superconducting vortex motion, creating reprogrammable resistance states and a switchable vortex Hall effect for novel superconducting electronics.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Controlling potential landscapes in interacting particle systems is key to emergent behaviors and functionalities.
- Artificial-spin-ice (ASI) offers tunable magnetic potentials for manipulating particle dynamics.
Purpose of the Study:
- To investigate the use of reconfigurable magnetic potentials from pinwheel ASI to control superconducting vortex motion.
- To explore the modification of superconducting transport properties and the vortex Hall effect using ASI.
Main Methods:
- Utilized pinwheel artificial-spin-ice structures to create spatially reconfigurable magnetic potentials.
- Studied the interaction between magnetic charges in ASI and superconducting vortices.
- Analyzed the resulting changes in the transport properties of superconducting thin films.
Main Results:
- Demonstrated that ASI magnetic potentials can tailor superconducting vortex trajectories.
- Observed reconstituted chain structures of magnetic charges leading to modified transport properties.
- Achieved a reprogrammable resistance state and a reversible, switchable vortex Hall effect.
Conclusions:
- ASI provides an effective in situ reconfigurable nanoscale energy landscape for designing superconducting electronics.
- This method enables precise control over superconducting vortex behavior and transport properties.
- The approach is potentially applicable to controlling other magnetic particle systems, like skyrmions.
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