Superconducting quantum interference filters as RF amplifiersстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Авторы:Snigirev Oleg V.,
Chukharkin Maxim L.,
Kalabukhov Alexey S.,
Tarasov Michael A.,
Deleniv Anatoly A.,
Mukhanov Oleg A.,
Winkler Dag
Местоположение издательства:Piscataway, NJ, United States
Первая страница:718
Последняя страница:721
Аннотация:The superconducting Quantum Interference Filter (SQIF) is a new type of superconducting device which has been recently proposed for highly sensitive magnetometers for absolute magnetic field measurements. It benefits of very high voltage-to-field response, which is, in contrast conventional dc SQUIDs, not periodical. The SQIF can also be used as a radiofrequency amplifier in a similar way as the dc SQUID that can operate in a gigahertz frequency range. We designed a series type of SQIF amplifier that is compatible to conventional YBa2Cu3O7 (YBCO) technology on bicrystal substrates. We present analytical, numerical and scale modeling as well as first electrical measurements results at frequencies up to 10 GHz. The SQIF array consists of 50 loops with randomly distributed areas from 0.5 to 1.5 times of 3 x 30 mu m(2). We also compared it to the regular array of conventional SQUIDs with the same loop areas. We have additional dc contacts to each 5-th SQUIDs and the SQlFs for control and comparison. Devices are fabricated using Josephson junctions with 3 mu m width, formed in YBCO over 24/24 and 12/12 degrees grain boundaries in yttrium-stabilized zirconia (YSZ) bicrystal substrates.