Superconducting Quantum Interference Device based on MgB2 nanobridges
arXiv:cond-mat/0105535 · doi:10.1063/1.1407864
Abstract
The recently discovered superconductor MgB2, with a transition temperature of 39K, 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 microvolt 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 7 x 10^6 A/cm2 at 4.2 K.
submitted to Appl. Phys. Lett
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Cited by in corpus (11)
- Multiband model for tunneling in MgB2 junctions
- Planar Superconductor-Normal-Superconductor Josephson Junctions in MgB2
- Growth of superconducting MgB2 thin films via postannealing techniques
- All-MgB2 Josephson tunnel junctions
- MgB2 tunnel junctions and 19 K low-noise dc superconducting quantum interference devices
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- A Directly Coupled Superconducting Quantum Interference Device Magnetometer Fabricated in Magnesium Diboride by Focused Ion Beam
- Point-Contact Spectroscopy in MgB_2: from Fundamental Physics to Thin-Film Characterization
- MgB2 radio-frequency superconducting quantum interference device prepared by atomic force microscope lithography
- Josephson effects in MgB2 meta masked ion damage junctions
- YBa2Cu3O7 grain boundary junctions and low-noise superconducting quantum interference devices patterned by a focused ion beam down to 80 nm linewidth