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Order and mobility of solid vortex matter in oscillatory driving currents.
1Laboratorio de Bajas Temperaturas, Departamento de Física, Universidad Nacional de Buenos Aires, Pabellón I, Ciudad Universitaria, 1428 Buenos Aires, Argentina.
Physical Review Letters
|June 13, 2002
Summary
Oscillating forces enhance vortex lattice order and mobility, even during plastic flow. This study links spatial order to mobility, aligning with experiments and predicting lattice orientation under oscillating forces.
Area of Science:
- Physics
- Materials Science
Background:
- Vortex lattices exhibit complex behavior under applied forces.
- Understanding vortex lattice dynamics is crucial for various physical phenomena.
Purpose of the Study:
- To numerically investigate the impact of steady and oscillating forces on vortex lattice order and mobility.
- To establish a relationship between the spatial order and mobility of the vortex lattice.
- To compare numerical findings with recent experimental results.
Main Methods:
- Numerical simulations were employed to study vortex lattice evolution.
- Analysis focused on degree order and mobility under different force conditions.
Main Results:
- Oscillatory motion of vortices promotes a more ordered lattice structure compared to constant forces.
- Vortex lattice mobility is directly related to its spatial order.
- Results are consistent with recent experimental observations.
Conclusions:
- Oscillating forces can induce order in vortex lattices, even under plastic flow conditions.
- The study establishes a correlation between vortex lattice order and mobility.
- A prediction is made regarding lattice orientation under oscillating forces.