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Electrically Tunable Multiterminal SQUID-on-Tip.

  • Author(s): Uri, Aviram
  • Meltzer, Alexander Y
  • Anahory, Yonathan
  • Embon, Lior
  • Lachman, Ella O
  • Halbertal, Dorri
  • Hr, Naren
  • Myasoedov, Yuri
  • Huber, Martin E
  • Young, Andrea F
  • Zeldov, Eli
  • et al.

Published Web Location

https://arxiv.org/abs/1606.05088
No data is associated with this publication.
Abstract

We present a new nanoscale superconducting quantum interference device (SQUID) whose interference pattern can be shifted electrically in situ. The device consists of a nanoscale four-terminal-four-junction SQUID fabricated at the apex of a sharp pipet using a self-aligned three-step deposition of Pb. In contrast to conventional two-terminal-two-junction SQUIDs that display optimal sensitivity when flux biased to about a quarter of the flux quantum, the additional terminals and junctions allow optimal sensitivity at arbitrary applied flux, thus eliminating the magnetic field "blind spots". We demonstrate spin sensitivity of 5 to 8 μB/Hz1/2 over a continuous field range of 0 to 0.5 T with promising applications for nanoscale scanning magnetic imaging.

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