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Non-hysteretic superconducting quantum interference proximity transistor with enhanced responsivity

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4866584· OSTI ID:22293105
;  [1]
  1. O.V. Lounasmaa Laboratory, Aalto University School of Science, POB 13500, FI-00076 AALTO (Finland)
This Letter presents fabrication and characterization of an optimized superconducting quantum interference proximity transistor. The present device, characterized by reduced tunnel junction area and shortened normal-metal section, demonstrates no hysteresis at low temperatures as we increased the Josephson inductance of the weak link by decreasing its cross section. It has consequently almost an order of magnitude improved magnetic field responsivity as compared to the earlier design. The modulation of both the current and the voltage across the junction have been measured as a function of magnetic flux piercing the superconducting loop.
OSTI ID:
22293105
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 8 Vol. 104; ISSN APPLAB; ISSN 0003-6951
Country of Publication:
United States
Language:
English

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