Midterm 2 Solutions: Difference between revisions
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a) | a) | ||
[[Image:lattice.png]] | |||
Image of square lattice with ferromagnetic J_(ij) <0 coupling nearest neighbor spins. Anti-ferromagnetic K_(ij) >0 coupling only second nearest neighbors. | Image of square lattice with ferromagnetic J_(ij) <0 coupling nearest neighbor spins. Anti-ferromagnetic K_(ij) >0 coupling only second nearest neighbors. | ||
Z_(FM) =4 | Z_(FM) =4 | ||
Revision as of 21:02, 6 April 2011
Problem 1.
a)
Image of square lattice with ferromagnetic J_(ij) <0 coupling nearest neighbor spins. Anti-ferromagnetic K_(ij) >0 coupling only second nearest neighbors.
Z_(FM) =4 Z_ (AFM) =4
