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Magnons Dispersion Relation

  1. Jul 13, 2012 #1
    Hello,

    Can anyone explain to me why, concept wise (not from calculations that I get it), is the dispersion relation of magnons (spin waves) quadratic in [itex]k[/itex] for small wavelengths?

    Also, can you give me other examples where such behavior appears?

    Thank you
     
    Last edited: Jul 13, 2012
  2. jcsd
  3. Jul 16, 2012 #2

    DrDu

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