Superconducting fluxon pumps and lenses

被引：229

作者：

Wambaugh, JF

Reichhardt, C

Olson, CJ

Marchesoni, F

Nori, F ^{[1
]}

机构：

[1] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[2] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

[3] Univ Camerino, Ist Nazl Fis Mat, I-62032 Camerino, Italy

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.83.5106

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study stochastic transport of fluxons in superconductors by alternating current (ac) rectification. Our simulated system provides a fluxon pump, "lens," or fluxon "rectifier" because the applied electrical ac is transformed into a net de motion of fluxons. Thermal fluctuations and the asymmetry of the ratchet channel walls induce this "diode" effect, which can have important applications in devices, such as SQUID magnetometers, and for fluxon optics, includings convex and concave fluxon lenses. Certain features are unique to this novel two-dimensional (2D) geometric pump, and different from the previously studied 1D ratchets.

引用

收藏

页码：5106 / 5109

页数：4

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