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The ac effect of vortex pinning in the arrays of defect sites on Nb films
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10.1063/1.2176143
/content/aip/journal/jap/99/8/10.1063/1.2176143
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/8/10.1063/1.2176143
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

SEM micrograph shows the top view of the cross section of the sample. The holes are arranged in triangular array with spacing variation in the range of and extended over an area of .

Image of FIG. 2.
FIG. 2.

Magnetoresistance (MR) curves in the mixed state. The temperature is and the injected dc current is . The right and left insets show the sharp and shallow dips around the first matching field. The open cycle and filled square symbols correspond to positive and negative applied fields, respectively. The upper inset shows the applied field away from the matching condition.

Image of FIG. 3.
FIG. 3.

(a) dc voltage vs dc applied current for a Nb film with graded pinning site’s density at first matching field and . The open cycle and filled square symbols correspond to positive current and negative current, respectively. (b) dc voltage drop with an ac applied current .

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/content/aip/journal/jap/99/8/10.1063/1.2176143
2006-04-28
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The ac effect of vortex pinning in the arrays of defect sites on Nb films
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/8/10.1063/1.2176143
10.1063/1.2176143
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