Superconductivity due to cooperation of electron-electron and electron-phonon interactions at quarter filling
Existing theories of superconductivity emphasize either electron-electron or electron-phonon interaction, each of which tends to cancel the effect of the other. We present direct evidence from unbiased numerical calculations of cooperative, as opposed to competing, effects of electron-electron and e...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-04-01
|
| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.023006 |
| _version_ | 1797211469832519680 |
|---|---|
| author | R. T. Clay D. Roy |
| author_facet | R. T. Clay D. Roy |
| author_sort | R. T. Clay |
| collection | DOAJ |
| description | Existing theories of superconductivity emphasize either electron-electron or electron-phonon interaction, each of which tends to cancel the effect of the other. We present direct evidence from unbiased numerical calculations of cooperative, as opposed to competing, effects of electron-electron and electron-phonon interactions within the frustrated Hubbard Hamiltonian with bond-coupled phonons, uniquely at the band filling of one-quarter. The two interactions cooperatively reinforce d-wave superconducting pair-pair correlations at this filling while competing with one another at all other densities. Our work gives insight into how intertwined charge order and superconductivity appear in real materials. |
| first_indexed | 2024-04-24T10:26:59Z |
| format | Article |
| id | doaj.art-62ff452a12c74093952af412e0fad2f3 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:26:59Z |
| publishDate | 2020-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-62ff452a12c74093952af412e0fad2f32024-04-12T16:52:18ZengAmerican Physical SocietyPhysical Review Research2643-15642020-04-012202300610.1103/PhysRevResearch.2.023006Superconductivity due to cooperation of electron-electron and electron-phonon interactions at quarter fillingR. T. ClayD. RoyExisting theories of superconductivity emphasize either electron-electron or electron-phonon interaction, each of which tends to cancel the effect of the other. We present direct evidence from unbiased numerical calculations of cooperative, as opposed to competing, effects of electron-electron and electron-phonon interactions within the frustrated Hubbard Hamiltonian with bond-coupled phonons, uniquely at the band filling of one-quarter. The two interactions cooperatively reinforce d-wave superconducting pair-pair correlations at this filling while competing with one another at all other densities. Our work gives insight into how intertwined charge order and superconductivity appear in real materials.http://doi.org/10.1103/PhysRevResearch.2.023006 |
| spellingShingle | R. T. Clay D. Roy Superconductivity due to cooperation of electron-electron and electron-phonon interactions at quarter filling Physical Review Research |
| title | Superconductivity due to cooperation of electron-electron and electron-phonon interactions at quarter filling |
| title_full | Superconductivity due to cooperation of electron-electron and electron-phonon interactions at quarter filling |
| title_fullStr | Superconductivity due to cooperation of electron-electron and electron-phonon interactions at quarter filling |
| title_full_unstemmed | Superconductivity due to cooperation of electron-electron and electron-phonon interactions at quarter filling |
| title_short | Superconductivity due to cooperation of electron-electron and electron-phonon interactions at quarter filling |
| title_sort | superconductivity due to cooperation of electron electron and electron phonon interactions at quarter filling |
| url | http://doi.org/10.1103/PhysRevResearch.2.023006 |
| work_keys_str_mv | AT rtclay superconductivityduetocooperationofelectronelectronandelectronphononinteractionsatquarterfilling AT droy superconductivityduetocooperationofelectronelectronandelectronphononinteractionsatquarterfilling |