Related Experiment Videos
Instabilities and resistance fluctuations in thin accelerated superconducting rings
Mikko Karttunen1, K R Elder, Martin B Tarlie
1Department of Physics and Centre for the Physics of Materials, McGill University, 3600 rue University, Montréal, Québec, Canada H3A 2T8.
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|September 21, 2002
Summary
This study investigates nonequilibrium properties in superconducting rings driven by an electromotive force (emf). Researchers analyzed how emf strength, noise, and resistivity impact dissipative phase slips and energy dissipation.
Area of Science:
- Condensed Matter Physics
- Quantum Phenomena
Background:
- Superconducting rings exhibit unique behaviors under external forces.
- Understanding nonequilibrium dynamics is crucial for advanced superconducting applications.
Purpose of the Study:
- To investigate the nonequilibrium properties of a driven quasi-one-dimensional superconducting ring.
- To analyze the influence of electromotive force (emf), thermal noise, and normal state resistivity on phase-slip phenomena.
Main Methods:
- Utilized both numerical simulations and analytical techniques.
- Examined the acceleration of superconducting electrons up to critical current.
- Studied the occurrence and impact of dissipative phase slips.
Main Results:
- Phase slips occur when critical current is reached, leading to dissipation.
- The magnitude of phase slips and dissipation are dependent on emf strength, thermal noise, and resistivity.
- Detailed predictions for phase-slip magnitudes and dissipation were made.
Conclusions:
- The study provides a comprehensive understanding of driven superconducting ring dynamics.
- Findings are relevant for controlling dissipation and optimizing superconducting devices.