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Micromagnet-superconducting hybrid structures with directional current flow dependence for persistent current switching
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10.1063/1.3176481
/content/aip/journal/apl/95/2/10.1063/1.3176481
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/2/10.1063/1.3176481
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the magnet-superconductor hybrid structure consisting of a permanent magnet, a ferromagnetic stripe array, and an insulating layer (substrate 1) positioned below a SC layer (substrate 2). Uniform applied field is redistributed and amplified over the ferromagnetic regions. The use of a rotary translation stage attached to substrate 1 allows accurate positioning and 90° rotations of the ferromagnetic stripe array with respect to the superconductor layer for switching between (a) persistent and (b) normal states.

Image of FIG. 2.
FIG. 2.

Illustration of the directional current flow dependence of the magnet-superconductor hybrid structure.

Image of FIG. 3.
FIG. 3.

[(a)–(d)] Fabrication process flow of the test structure and (e) scanning electron micrographs of the fabricated test structure.

Image of FIG. 4.
FIG. 4.

(a) SHPM image of the sample at 300 K and 5 kOe applied field. (b) Magnetic field profile across the Co stripes. (c) plot of the control film without Co stripes.

Image of FIG. 5.
FIG. 5.

(a) curves at 4.2 K and 5 kOe for both current directions. (b) Critical current density plot. The difference in at zero applied field is due to remnant magnetization of Co stripes.

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/content/aip/journal/apl/95/2/10.1063/1.3176481
2009-07-13
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Micromagnet-superconducting hybrid structures with directional current flow dependence for persistent current switching
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/2/10.1063/1.3176481
10.1063/1.3176481
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