Magnetic Field Investigations of Small Sputtered Step-Edge Junctions
نویسندگان
چکیده
منابع مشابه
Magnetic Field Investigations of Small Sputtered Step-Edge Junctions
YBazCu,07 step-edge junctions are fabricated on SrTi03-substrates. The steps of 300nm height are milled by argon-ion-beam-etching (BE). The films are deposited by high-pressure on-axis magnetron sputter technique patterned to microbridges with widths down to 0.5pm by electron beam lithography and argon ion e t c h . For ratios of film tluckness to step height of t/h % the current-voltage charac...
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Abstruct-The suppression of the critical current in YBCO Josephson junctions by the Earth's magnetic field strongly affects the operation of SQUIDs outside magnetic shielding. Commonly, one observes a modulation of the SQUID fluxvoltage transfer function amplitude, Vsq.pp, with a period of AB,, leading to an increased white flux noise level or unstable SQUID operation. Here, we report on the in...
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The dc characteristics and magnetic field dependences of Y–Ba–Cu–O bicrystal grain boundary junctions (BGBJs) and step edge junctions (SEJs) were investigated for fabrication of rf-SQUIDs. Test junctions with up to 8 μm widths as well as the junctions of the two types of junction-based rf-SQUID were studied. The SEJs typically showed lower Jc and higher ρN as compared to the BGBJs, resulting in...
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Superconducting tunnel junctions STJs have been successfully used as single-photon detectors but require the use of a magnetic field to operate. A recent paper has proposed the idea to use a circuit of three junctions in place of a single junction in order to achieve the necessary biasing without applying a magnetic field. The nonlinear interaction between the different junctions in the circuit...
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ژورنال
عنوان ژورنال: Le Journal de Physique IV
سال: 1996
ISSN: 1155-4339
DOI: 10.1051/jp4:1996358