spin wave dispersionferromagnetbasic assumptionThis lecture is an introduction to the spin wave theory. We study the cases of a ferromagnet and of an antiferromagnet. We also discuss the use of neutron techniques in measuring the dispersion of spin waves.SYLVAIN PETIT...
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His general theory of relativity further taught us that spacetime is not just a stage on which dynamics takes place, but is a participant: The field equation of general relativity connects matter dynamics to the curvature of spacetime. Curvature is responsible for gravity, carrying us...