Coexistence of superconductivity and antiferromagnetism in the Hubbard model for cuprates
| Autor: | David Sénéchal, Simon Verret, Andre-Marie Tremblay, Alexandre Foley |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Superconductivity Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics Hubbard model Electron doping FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Condensed Matter - Strongly Correlated Electrons Atomic orbital Condensed Matter::Superconductivity 0103 physical sciences Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Cuprate 010306 general physics 0210 nano-technology Parametrization |
| Zdroj: | Physical Review B. 99 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.99.184510 |
| Popis: | Antiferromagnetism and $d$-wave superconductivity are the most important competing ground-state phases of cuprate superconductors. Using cellular dynamical mean-field theory for the Hubbard model, we revisit the question of the coexistence and competition of these phases in the one-band Hubbard model with realistic band parameters and interaction strengths. With an exact diagonalization solver, we improve on previous works with a more complete bath parametrization which is carefully chosen to grant the maximal possible freedom to the hybridization function for a given number of bath orbitals. Compared with previous incomplete parametrizations, this general bath parametrization shows that the range of microscopic coexistence of superconductivity and antiferromagnetism is reduced for band parameters for ${\mathrm{Nd}}_{2\ensuremath{-}x}{\mathrm{Ce}}_{x}{\mathrm{CuO}}_{4}$ (NCCO) and confined to electron doping with parameters relevant for ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7\ensuremath{-}x}$ (YBCO). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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