抄録
A quantum mechanical phenomenology for heavy-fermion systems is formulated. The effective Lagrangian for low-energy excitations contains a localized spin-fluctuation part which is coupled with an itinerant fermion part. Each part represents the dual nature of strongly correlated f electrons. The coupling parameter is fixed by comparison with the Fermi-liquid theory for the Anderson model. The comparison also fixes the localized spin-fluctuation spectrum. As an advantage over the Fermi-liquid description the present model takes into account the RKKY interaction and non-linear effects of spin polarization. A formula for the magnetic equation of state is derived which is applicable to the metamagnetism and weak antiferromagnetism in heavy-fermion systems.
| 本文言語 | English |
|---|---|
| ページ（範囲） | 2831-2840 |
| ページ数 | 10 |
| ジャーナル | journal of the physical society of japan |
| 巻 | 59 |
| 号 | 8 |
| DOI | |
| 出版ステータス | Published - 1990 1月 1 |
ASJC Scopus subject areas
- 物理学および天文学（全般）