Recently we have shown that an anistropic Anderson-Morel state may be stabilized by feedback effects in the effective interaction arising from introduction of a gap in the spin-fluctuation spectrum. In this paper we determine the general form of the fourth-order term in the free energy owing to the above mechanism and use this result to make predictions regarding the phase diagram in the presence of a magnetic field and as a function of pressure.
|Original language||English (US)|
|Number of pages||3|
|Journal||Physical Review A|
|State||Published - 1973|
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics