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Lecture 20: Spin Waves are the Goldstone Modes of Ferromagnets artwork
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Lecture 20: Spin Waves are the Goldstone Modes of Ferromagnets

Solid State Physics by Prof. Carlson

Apr 4, 2006Education

Ferromagnets spontaneously break a continuous symmetry -- that is, when the net magnetization develops, it must choose a particular direction to point. But raise the temperature to disorder this, then lower it again, and...

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