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A two-band Hubbard-model description of an almost mixed valence system: A new ground state for La
| Content Provider | Scilit |
|---|---|
| Author | Weling, Fredy |
| Copyright Year | 1978 |
| Description | Journal: Journal of Physics C: Solid State Physics Though not quite a 'mixed valence' system, La shows anomalous properties (e.g. low melting and low Debye temperature, high superconducting transition temperature) which are thought to be due to the proximity of the atomic f-level to the Fermi level. To study the influence of the f-band on the ground state, a two-band Hubbard model is used and it is shown that an ansatz for the ground state, constructed by partially suppressing configurations where two d-electrons are on the same ion by allowing one of them to transfer to the f-level, gives a lower ground-state energy than the Hartree-Fock state. |
| Related Links | http://iopscience.iop.org/article/10.1088/0022-3719/11/15/021/pdf |
| Ending Page | 3234 |
| Page Count | 10 |
| Starting Page | 3225 |
| ISSN | 00223719 |
| DOI | 10.1088/0022-3719/11/15/021 |
| Journal | Journal of Physics C: Solid State Physics |
| Issue Number | 15 |
| Volume Number | 11 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1978-08-14 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics C: Solid State Physics Condensed Matter Physics Hartree Fock Ground State Hubbard Model Ground State Energy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy Condensed Matter Physics Engineering |
