Enhanced pinning for vortices in hyperuniform pinning arrays and emergent hyperuniform vortex configurations with quenched disorder
| العنوان: | Enhanced pinning for vortices in hyperuniform pinning arrays and emergent hyperuniform vortex configurations with quenched disorder |
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| المؤلفون: | Q. Le Thien, Cynthia Reichhardt, Danielle McDermott, C. J. O. Reichhardt |
| المصدر: | Physical Review B. 96 |
| بيانات النشر: | American Physical Society (APS), 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Superconductivity, Physics, Condensed matter physics, Isotropy, Non-equilibrium thermodynamics, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Vortex, Amorphous solid, Condensed Matter::Superconductivity, 0103 physical sciences, State of matter, Particle, 010306 general physics, 0210 nano-technology, Pinning force |
| الوصف: | Disordered hyperuniformity is a state of matter which has isotropic liquid like properties while simultaneously having crystalline like properties such as little variation in the density fluctuations over long distances. Such states arise for the packing of photoreceptor cells in chicken eyes, jammed particle assemblies, and in nonequilibrium systems. An open question is what possible applications could utilize properties of hyperuniformity. One of the major issues for applications of type-II superconductors is how to achieve high critical currents by preventing the motion or depinning of vortices, so there is great interest in understanding which pinning site geometries will lead to the optimal pinning of vortices. Here, using large scale computational simulations, we show that vortices in a type-II superconductor with a hyperuniform pinning arrangement exhibit enhanced pinning compared to an equal number of pinning sites with a purely random arrangement, and that the enhancement is robust over a wide range of parameters. The stronger pinning arises in the hyperuniform arrays due to the suppression of pinning density fluctuations, permitting higher pin occupancy and the reduction of weak links that lead to easy flow channeling. We also show that in general, in amorphous vortex states in the presence of either random or hyperuniform pinning arrays, the vortices themselves exhibit disordered hyperuniformity due to the repulsive nature of the vortex-vortex interactions. |
| تدمد: | 2469-9969 2469-9950 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::f8695be92a2f426b2024dd097ccde8b4Test https://doi.org/10.1103/physrevb.96.094516Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi...........f8695be92a2f426b2024dd097ccde8b4 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24699969 24699950 |
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