Magnons Dispersion Relation

PLuz

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

DrDu

See 5.5.Y here:

http://people.ccmr.cornell.edu/~clh/p654/5.5.pdf

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PLuz	Magnons Dispersion Relation Tweet 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

DrDu Recognitions: Science Advisor	See 5.5.Y here: http://people.ccmr.cornell.edu/~clh/p654/5.5.pdf