首页    期刊浏览 2025年02月21日 星期五
登录注册

文章基本信息

  • 标题:High operating temperature in V-based superconducting quantum interference proximity transistors
  • 本地全文:下载
  • 作者:Nadia Ligato ; Giampiero Marchegiani ; Pauli Virtanen
  • 期刊名称:Scientific Reports
  • 电子版ISSN:2045-2322
  • 出版年度:2017
  • 卷号:7
  • 期号:1
  • DOI:10.1038/s41598-017-09036-0
  • 语种:English
  • 出版社:Springer Nature
  • 摘要:Here we report the fabrication and characterization of fully superconducting quantum interference proximity transistors (SQUIPTs) based on the implementation of vanadium (V) in the superconducting loop. At low temperature, the devices show high flux-to-voltage (up to 0.52 mV/Φ0) and flux-to-current (above 12 nA/Φ0) transfer functions, with the best estimated flux sensitivity ~ 2.6 μΦ0/(Hz)(1/2) reached under fixed voltage bias, where Φ0 is the flux quantum. The interferometers operate up to T bath [Formula: see text] 2 K, with an improvement of 70% of the maximal operating temperature with respect to early SQUIPTs design. The main features of the V-based SQUIPT are described within a simplified theoretical model. Our results open the way to the realization of SQUIPTs that take advantage of the use of higher-gap superconductors for ultra-sensitive nanoscale applications that operate at temperatures well above 1 K.
国家哲学社会科学文献中心版权所有