Low energy excitation of the one-dimensional Kondo-necklace model
| Autor: | Qingshan Yuan, Yuguang Chen, Hong Chen, Yu-Mei Zhang |
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| Rok vydání: | 1998 |
| Předmět: |
Physics
Bosonization Condensed matter physics Operator (physics) Kondo insulator General Physics and Astronomy Renormalization group Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Quantum mechanics Condensed Matter::Strongly Correlated Electrons Kondo effect Excitation Lattice model (physics) Spin-½ |
| Zdroj: | Physics Letters A. 245:167-171 |
| ISSN: | 0375-9601 |
| DOI: | 10.1016/s0375-9601(98)00369-7 |
| Popis: | The one-dimensional Kondo-necklace model is investigated on the basis of bosonization. We prove that the model belongs to the same universality class as the one-dimensional half-filling Kondo lattice model at operator level, furthermore, the excitation and the gap formation are derived. We suggest that the spin gap of this model always exists for all finite J . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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