Influence of Local Correlations on the 'Homogeneous Insulator-Superconductor' Transition in the Domain Boundaries of the Charge-Order Phase of a 2D System of a Mixed Valence
| Autor: | Konev, V. V., Ulitko, V. A., Yasinskaya, D. N., Panov, Yu. D., Moskvin, A. S. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | V.V. Konev, V.A. Ulitko, D.N. Yasinskaya et al. Phys. Solid State 60, 2132-2134 (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1134/S1063783418110136 |
| Popis: | It is demonstrated in the (pseudo)spin S=1 formalism that the structure of antiphase domain boundaries in the phase of charge ordering of a mixed-valence system of the Cu1+, 2+, 3+ "triplet" type in cuprates on a two-dimensional square lattice depends to a considerable extent on on-site correlation parameter U. The results of computer modeling on large square lattices illustrate the change in the boundary structure (from a homogeneous monovalent nonconducting structure of the Cu2+ type to a filamentary superconducting one) induced by a relatively small variation of positive U values. Comment: 3 pages, 2 figures |
| Databáze: | arXiv |
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