Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Superconductor dark matter detection?

  1. Nov 5, 2013 #1
    Sorry - a very vague question:

    Could a superconductor be used to detect dark matter?

    The dark matter might interact with electrons in the superconductor giving them some momentum.

    These moving electrons would constitute a supercurrent which could be measured - maybe!

    Perhaps the interaction with the dark matter would break the "Cooper pairs" and so destroy a supercurrent. Maybe that could be the basis of a detection method instead?
    Last edited: Nov 5, 2013
  2. jcsd
  3. Nov 5, 2013 #2


    User Avatar
    2017 Award

    Staff: Mentor

    Superconductors can help in dark matter searches, but not in the way you describe it - you have electrons with non-zero momentum in every material (and no way to see individual electrons with small momenta), it does not matter if it is a superconductor or not.
  4. Nov 5, 2013 #3
    Perhaps one could accurately measure the supercurrent in a superconducting loop by measuring the magnetic field around it using a SQUID. Apparently they are accurate to a magnetic flux quantum ##h/e##.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook