期刊
PHYSICAL REVIEW B
卷 79, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.134516
关键词
flux pinning; Meissner effect; paramagnetism; shells (structures)
资金
- Fund for Scientific Research-Flanders Projects [G.0370.09N, G.0180.09N, G.0356.06, G.0115.06, G.0435.03]
- WOG [WO.033.09N]
- U. S. Department of Energy [DE-FG02-ER45978]
- Flemish Government
- University of Antwerp
We show that on superconducting spherical nanoshells, the coexistence of the Meissner state with a variety of vortex patterns drives the phase transition to higher magnetic fields. The spherical geometry leads to a Magnus-Lorentz force pushing the nucleating vortices and antivortices toward the poles, overcoming local pinning centers, preventing vortex-antivortex recombination, and leading to the appearance of a Meissner belt around the sphere equator. In sufficiently small and thin spherical shells paramagnetic vortex states can be stable, enabling spatial separation of freely moving shells with different radii and vorticity in an inhomogeneous external magnetic field.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据