Abstract
The superconductor MgB2, with a transition temperature of 39 K, has significant potential for future electronics. An essential step is the achievement of Josephson circuits, of which the superconducting quantum interference device ~SQUID! is the most important. Here, we report Josephson quantum interference in superconducting MgB2 thin films. Modulation voltages of up to 30 mV are observed in an all-MgB2 SQUID, based on focused-ion-beam patterned nanobridges. These bridges, with a length scale ,100 nm, have outstanding critical current densities of 73106 A/cm2 at 4.2 K.
Original language | Undefined |
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Pages (from-to) | 2420-2422 |
Number of pages | 3 |
Journal | Applied physics letters |
Volume | 79 |
Issue number | 15 |
DOIs | |
Publication status | Published - 2001 |
Keywords
- METIS-200475
- IR-36051