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What is the signal of a spin wave?

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From what I understand, for example in the Ising model ground state, we can probe the correlation function via neutron scattering, and the correlation function gives the magnetic susceptibility for the system. Is there a correlation function characteristics of spin waves, or something for us to know that it is there? Looking at the visualization like this

I imagine we must have some correlation between the spins. Furthermore, is there a throughout reference on this topic? Thank you!

Question from here: https://physics.stackexchange.com/questions/808977/what-is-the-signal-of-a-spin-wave, but no one answers me there.

asked Apr 5 in Theoretical Physics by towiti (5 points) [ revision history ]

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