The Ground-State Phase Diagram of 2D Spin–Pseudospin System
| Autor: | K. S. Budrin, Yu. D. Panov, A. S. Moskvin, A. A. Chikov |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Physics Valence (chemistry) Condensed matter physics Doping Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Quantum mechanics 0103 physical sciences Condensed Matter::Strongly Correlated Electrons General Materials Science Cuprate 010306 general physics Ground state Phase diagram |
| Zdroj: | Journal of Low Temperature Physics. 187:646-653 |
| ISSN: | 1573-7357 0022-2291 |
| DOI: | 10.1007/s10909-017-1743-9 |
| Popis: | High-Tc cuprates are characterized both by coexistence and competition of the spin and charge orders. We examine a simplified 2D model cuprate system where one of the on-site valence triplet states (or pseudospin $$S=1$$ states) has a spin $$s=1/2$$ degree of freedom. Depending on the value of the on-site correlation, inter-site density–density interaction, the spin exchange integral and the doping, the system shows different types of ground-state ordering. These include both the coexistence and competition of the spin and pseudospin ordering, for a weak and strong exchange coupling, respectively. |
| Databáze: | OpenAIRE |
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