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Negative Permeability

  1. Sep 2, 2007 #1
    Metamaterial structures such as split ring resonators exist such that at their resonant frequency, a stop band occurs, and are effectively therefore opaque to electromagnetic radiation at those frequencies. Could anyone explain this mechanism?
     
  2. jcsd
  3. Sep 2, 2007 #2

    ZapperZ

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    http://www.physicstoday.org/vol-57/iss-6/pdf/vol57no6p37_43.pdf [Broken]

    Zz.
     
    Last edited by a moderator: May 3, 2017
  4. Sep 2, 2007 #3
    Thanks for that, although i had already come across that article i missed the most important sentence "If instead of electrons the material response were due to harmonically bound magnetic moments, then a negative magnetic response would exist."

    Anyone find any other article that would expand on the source of the negative magnetic response?
     
  5. Sep 2, 2007 #4

    ZapperZ

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    But... but.. it is due to the solution of Maxwell's equation and the geometry of the split rings. I thought this is covered in that article?

    Here's another article that covers almost the same thing.

    Zz.
     
  6. Sep 2, 2007 #5
    Well yes the geometry of the split rings is what causes the resonance, and ultimately the negative permeability, but my question is what is in the wave-matter interaction that stops the propagation of the electromagnetic wave. Truly, as u stated, if you solve Maxwell's equations with a negative permeability, the wave will not propagate.

    What I am looking for however is an explanation similar to the one given in the first article for negative permittivity...
     
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