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| Creator | Title | Description | Subject | Date | ||
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 | Mattis, Daniel C. | Band theory of ferromagnetism, antiferromagnetism, and spin waves | Intra-atomic exchange (Hund's rule mechanism) and Heisenberg nearest-neighbor exchange are examined for their role in the ferromagnetism of metals with degenerate bands. The equations of motion of spin waves valid near T=0°K are derived, and a number of branches are found. When the equations are ... | Orbital degeneracy; Indirect exchange theory; Band theory | 1964 |
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