LTS slotted SQUIDs for reduction of 1/f noise

E. Bartolomé*, R López, J. Flokstra, H. Rogalla

*Corresponding author for this work

Research output: Contribution to journalArticleAcademic

2 Citations (Scopus)

Abstract

We have developed Nb/Al dc SQUIDs with differently structured washers (including slots and/or holes, a moat surrounding the washer and a zipper slit) to study the reduction of 1/f noise owing to hopping of flux vortices, trapped in the SQUID body during the cool-down process. A gradual reduction of the 1/f noise (measured down to 0.2 Hz) was measured for SQUIDs with increasing number of slots. Holes proved to be less effective than slots in reducing the flicker noise. The 1/f noise of the SQUIDs with a moat and zipper slit was smaller than that of a bold SQUID, but the reduction of noise was on the average less significant than for the slotted SQUIDs.
Original languageEnglish
Pages (from-to)233-236
JournalPhysica C
Volume372-376
Issue numberPart 1
DOIs
Publication statusPublished - 2002

Keywords

  • Moats
  • Reduction 1/f noise
  • LTS SQUIDs
  • Slots and holes

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