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Manipulation of the vortex motion in nanostructured ferromagnetic/superconductor hybrids
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Magnetic force microscopy images of a triangular array of magnetic triangular loops (a) in the as-grown state and (c) in the magnetized state. The white triangles emphasize the close-packed triangular array. The bottom right bars indicate scale. In-plane magnetization of individual elements obtained by scanning electron microscopy with polarized analysis for an (b) as-grown state and (d) magnetized state. The color code shown in the disk indicates the orientation of the in-plane magnetization.

Image of FIG. 2.
FIG. 2.

(Color online) Schematic presentation of a cross section along the white dotted line shown in Fig. 1(c) after the rings were magnetized with . The stray field originated in the dipoles is indicated as dashed lines. The resulting pinning potential and the net flux motion for an ac-current excitation along are shown in the upper part of the drawing.

Image of FIG. 3.
FIG. 3.

(Color online) Rectified voltage as a function of field and temperature for a sinusoidal excitation of amplitude and frequency of for (a) plain film with no patterning underneath, (b) triangular micromagnets in the as-grown state, (c) triangular magnets magnetized along and (d) triangular micromagnets magnetized along . With solid square symbols is indicated the superconductor/normal transition as determined by 10% normal state resistance criterion with .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Manipulation of the vortex motion in nanostructured ferromagnetic/superconductor hybrids