Creator | Title | Description | Subject | Date | ||
---|---|---|---|---|---|---|
1 |
![]() | 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 |
2 |
![]() | Mattis, Daniel C. | Long-ranged magnetic polarization effects | Two years ago a group1 at Bell Telephone Laboratories discovered an exceedingly long-ranged magnetic interaction among rare earth (RE) atoms dissolved in palladium. It is the purpose of the present note to suggest a theory for this phenomenon, which, it will be recalled, could not be explained by t... | Indirect exchange theory | 1964-05 |