Focused helium ion beam creates controllable, highly uniform SNS and SIS Josephson junctions in YBCO films, with arrays showing no appreciable variation in electrical properties.
YBa 2Cu3O7−δ superconducting quantum interference devices with metallic to insulating barriers written with a focused helium ion beam,
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Direct-Write Ion Beam Irradiated Josephson Junctions
Focused helium ion beam creates controllable, highly uniform SNS and SIS Josephson junctions in YBCO films, with arrays showing no appreciable variation in electrical properties.