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Superconducting-quantum-interference-device array magnetometers with directly coupled pickup loop and serial flux dams
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10.1063/1.2353396
/content/aip/journal/jap/100/6/10.1063/1.2353396
http://aip.metastore.ingenta.com/content/aip/journal/jap/100/6/10.1063/1.2353396
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Surface morphology of step-edge substrates with different step angles, (a) 70° STO substrate and (b) 25° MgO substrate, probed with atomic force microscope.

Image of FIG. 2.
FIG. 2.

(Color online) (a) curves of ten Josephson junctions connected in series at and (b) curves of 1-SQUID and 15-SQUID megnetometers connected in series at .

Image of FIG. 3.
FIG. 3.

(Color online) Schematics of (a) the SQUID magnetometer. (b) Expanded plot of SQUIDs with junction widths of 2, 3, 4, and . Two dummy SQUIDs were incorporated into the serial SQUID array. A total of 200 Josephson junctions are inserted in the pickup loop to form serial flux dams.

Image of FIG. 4.
FIG. 4.

(Color online) curve for one-SQUID and two-SQUID magnetometers at .

Image of FIG. 5.
FIG. 5.

(Color online) Magnetic field sensitivity of the SQUID magnetometer with 200 serial flux dams for (a) one-SQUID magnetometer, and (b) two-SQUID magnetometer. (c) Two-SQUIDs without flux dams on zero-field cooling. The measurement temperature is .

Image of FIG. 6.
FIG. 6.

(Color online) curves (a) and (b) show the flux dams open and close for the SQUID magnetometer. The inset shows the curve when the flux dams are close.

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/content/aip/journal/jap/100/6/10.1063/1.2353396
2006-09-27
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Superconducting-quantum-interference-device array magnetometers with directly coupled pickup loop and serial flux dams
http://aip.metastore.ingenta.com/content/aip/journal/jap/100/6/10.1063/1.2353396
10.1063/1.2353396
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