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Enhanced pinning in superconducting thin films with graded pinning landscapes
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10.1063/1.4807848
/content/aip/journal/apl/102/21/10.1063/1.4807848
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/21/10.1063/1.4807848
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Scheme of the density of ADs for samples Plain, UNI, and GRAD (not to scale); (b) left panel: average areal density of antidots as a function of position for the three cases of pinning distribution considered in this work; (b) right panels: atomic force microscopy image showing the distribution of antidots at the border and at the center of the GRAD sample; (c) magneto-optical image, taken at  = 2.8 K and  = 2.2 Oe, for a sister plain sample (see Ref. ); (d) same as (c) for sample UNI, at  = 4 K and  = 1.2 Oe; (e) sample GRAD at  = 4.75 K and  = 1.3 Oe.

Image of FIG. 2.
FIG. 2.

(a) Dc magnetization versus magnetic field taken at the reduced temperature for samples Plain, UNI, and GRAD. (b) Magnetization loops for the 3 samples in the avalanche region ( ); a fourth loop is also shown for sample GRAD covered with a thick disk of Ag, an artifact employed to substantially suppress flux avalanches.

Image of FIG. 3.
FIG. 3.

Boundaries of the instability region of the studied a-MoGe thin films. Notice the logarithmic scale on the lower portion of the vertical axis.

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/content/aip/journal/apl/102/21/10.1063/1.4807848
2013-05-30
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Enhanced pinning in superconducting thin films with graded pinning landscapes
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/21/10.1063/1.4807848
10.1063/1.4807848
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