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THE FORMATION OF HEAVY ELECTRONS IN A MAGNETICALLY ORDERED MATERIAL |
| CHEN Changfeng;ZHANG Liyuan |
| Institute of solid State Physics, Department of Physics, Peking University, Beijing |
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| Cite this article: |
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CHEN Changfeng, ZHANG Liyuan 1987 Chin. Phys. Lett. 4 5-8 |
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Abstract The necessary conditions for the presence of heavy electrons in metals and compounds, which contain local f electrons, are analyzed with an emphasis on the magnetically ordered materials. A self-consistent treatment on the Periodic Anderson Hamiltonian shows that there is a sharp change in the effective mass (therefore the density of states) while the virtual bound level crosses the Fermi level; meantime a transition between magnetic and nonmagnetic or/and between different magnetic states may concomitantly occur. Numerical calculation has been carried out and some typical results are shown.
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Published: 01 January 1987
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