TEMPERATURE-DEPENDENT RESPONSE OF A DC SQUID

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Authors
  1. Wilson, H.S.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The report describes an experimental investigation of the temperature dependences of the output of a DC SQUID (SQUID-Superconducting Quantum Interference Device) and the mutual inductance M between the SQUID and external electronics. The method of measuring tiny charges in the mutual inductance M is described in detail. It is concluded that the temperature dependence of M is 1 dm/m dT = +3.1 x E3(-)/K which is large and of the opposite sign to the expected result. The method used also revealed small nonlinearities in the SQUID feedback electronics. The SQUID was cooled in the Earth's magnetic field and the temperature and pressure dependence of the SQUID output signal was large.
Keywords
SQUID;Superconducting Quantum Interference Devices
Report Number
DREA-TM-97-261 — Technical Memorandum
Date of publication
01 Jun 1997
Number of Pages
22
DSTKIM No
98-00857
CANDIS No
507719
Format(s):
Hardcopy;Document Image stored on Optical Disk

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