Ground-state phase diagram of the t-t ′ -J model
| Autor: | Shengtao Jiang, Steven R. White, Douglas J. Scalapino |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Multidisciplinary Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics Condensed Matter - Superconductivity Density matrix renormalization group Lattice (group) FOS: Physical sciences Fermi surface 01 natural sciences 010305 fluids & plasmas Superconductivity (cond-mat.supr-con) Condensed Matter - Strongly Correlated Electrons Condensed Matter::Superconductivity Pairing 0103 physical sciences t-J model Antiferromagnetism Condensed Matter::Strongly Correlated Electrons 010306 general physics Ground state Spin (physics) |
| Zdroj: | Proceedings of the National Academy of Sciences. 118 |
| ISSN: | 1091-6490 0027-8424 |
| DOI: | 10.1073/pnas.2109978118 |
| Popis: | Significance Theoretical efforts to understand the superconducting cuprates have focused on a few simplified but challenging models: notably the Hubbard and the t - t ′ - J models. Using density matrix renormalization group (DMRG) simulations on width-8 cylinders, we study the ground-state phase diagram of the t - t ′- J model. The next nearest-neighbor hopping t ′ allows one to distinguish between hole ( t ′ < 0 ) and electron doping ( t ′ > 0 ). We find for the magnetic, charge, and single-particle properties that this model roughly captures the differences between the electron- and hole-doped cuprates. However, the superconducting properties differ. For hole doping ( t ′ < 0 ), there is an absence of superconductivity, while for electron doping ( t ′ > 0), we find d -wave superconductivity coexisting with antiferromagnetism and a secondary triplet p -wave pairing component. |
| Databáze: | OpenAIRE |
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