Patent ID: 8035933

Claim:
A persistent current switch, comprising: a first slit (S) longitudinally extending from a first point (E 1 ) on one end of a superconducting wire to a second point (E 2 ) and from a third point (E 3 ) to a fourth point (E 4 ), the second, third, and fourth points (E 2 ), (E 3 ), (E 4 ) being arranged sequentially in a longitudinal line; and second and third slits (S 1 ), (S 2 ) provided at opposite sides of a region between the second point (E 2 ) and the third point (E 3 ) where no first slit exists, the second and third slits (S 1 ), (S 2 ) having a length longer than a distance between the second point (E 2 ) and the third point (E 3 ).