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I The component of the total spin in the direction of H

  1. Jan 11, 2019 #1
    323.png

    i don't understand,
    Why The component of the total spin in the direction of H is ##M_s = \frac{1}{2}(N_{up}-N_{down})##
     
  2. jcsd
  3. Jan 11, 2019 #2

    DrClaude

    User Avatar

    Staff: Mentor

    Because ##N_{\uparrow}## particles contribute ##+1/2## and ##N_{\downarrow}## particles contribute ##-1/2## to the total magnetisation.
     
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