Dynamics of vortex–antivortex pair in a superconducting thin strip with narrow slits<sup><xref rid="cpb_26_4_047403fn1" ref-type="fn">*</xref></sup> <fn id="cpb_26_4_047403fn1"> <label>*</label> <p>Project supported by the Fundamental Research Funds for the Central Universities, China (Grant Nos. 310812171011 and G2016KY0305), the National Natural Science Foundation of China (Grant No. 11421062), and the National Key Project of Magneto-Constrained Fusion Energy Development Program, China (Grant No. 2013GB110002).</p> </fn>

Dynamics of vortex–antivortex pair in a superconducting thin strip with narrow slits^* *

Project supported by the Fundamental Research Funds for the Central Universities, China (Grant Nos. 310812171011 and G2016KY0305), the National Natural Science Foundation of China (Grant No. 11421062), and the National Key Project of Magneto-Constrained Fusion Energy Development Program, China (Grant No. 2013GB110002).

He An^{1, †}, Xue Cun², Zhou You-He^{3, 4}

(color online) (a) Schematic view of the superconducting sample (size ) contained a narrow slit (size ) with attached normal leads (size a) in the presence of a dc current I along y axis. denotes the shift distance of the slit from the center in another case. (b) Vector plot of the superconducting current in case of and nonzero applied current. Larger (smaller) arrows regions corresponds to high (low) currents. The magnetic-field profile is superimposed and a pair of positive and negative flux is observed around the two tips of the slit (white dashed line).