Feshbach hypothesis of high-Tc superconductivity in cuprates
Abstract Resonant interactions associated with the emergence of a bound state constitute one of the cornerstones of modern many-body physics. Here we present a Feshbach perspective on the origin of strong pairing in Fermi-Hubbard type models. We perform a theoretical analysis of interactions between...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55549-4 |
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| author | Lukas Homeier Hannah Lange Eugene Demler Annabelle Bohrdt Fabian Grusdt |
| author_facet | Lukas Homeier Hannah Lange Eugene Demler Annabelle Bohrdt Fabian Grusdt |
| author_sort | Lukas Homeier |
| collection | DOAJ |
| description | Abstract Resonant interactions associated with the emergence of a bound state constitute one of the cornerstones of modern many-body physics. Here we present a Feshbach perspective on the origin of strong pairing in Fermi-Hubbard type models. We perform a theoretical analysis of interactions between spin-polaron charge carriers in doped Mott insulators, modeled by a near-resonant two-channel scattering problem, and report evidence for Feshbach-type interactions in the $${d}_{{x}^{2}-{y}^{2}}$$ d x 2 − y 2 channel, consistent with the established phenomenology of cuprates. Existing experimental and numerical results on hole-doped cuprates lead us to conjecture the existence of a light, long-lived, low-energy excited state of two holes, which enables near-resonant interactions. To put our theory to a test we suggest to use coincidence angle-resolved photoemission spectroscopy (cARPES), pair-tunneling measurements or pump-probe experiments. The emergent Feshbach resonance among spin-polarons could also underlie superconductivity in other doped antiferromagnetic Mott insulators highlighting its potential as a unifying strong-coupling pairing mechanism rooted in quantum magnetism. |
| format | Article |
| id | doaj-art-49f90f1dbe7e4cc8aa3a4f236c392027 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-49f90f1dbe7e4cc8aa3a4f236c3920272025-01-05T12:39:14ZengNature PortfolioNature Communications2041-17232025-01-0116111410.1038/s41467-024-55549-4Feshbach hypothesis of high-Tc superconductivity in cupratesLukas Homeier0Hannah Lange1Eugene Demler2Annabelle Bohrdt3Fabian Grusdt4Department of Physics and Arnold Sommerfeld Center for Theoretical Physics (ASC), Ludwig-Maximilians-Universität MünchenDepartment of Physics and Arnold Sommerfeld Center for Theoretical Physics (ASC), Ludwig-Maximilians-Universität MünchenInstitute for Theoretical Physics, ETH ZurichMunich Center for Quantum Science and Technology (MCQST)Department of Physics and Arnold Sommerfeld Center for Theoretical Physics (ASC), Ludwig-Maximilians-Universität MünchenAbstract Resonant interactions associated with the emergence of a bound state constitute one of the cornerstones of modern many-body physics. Here we present a Feshbach perspective on the origin of strong pairing in Fermi-Hubbard type models. We perform a theoretical analysis of interactions between spin-polaron charge carriers in doped Mott insulators, modeled by a near-resonant two-channel scattering problem, and report evidence for Feshbach-type interactions in the $${d}_{{x}^{2}-{y}^{2}}$$ d x 2 − y 2 channel, consistent with the established phenomenology of cuprates. Existing experimental and numerical results on hole-doped cuprates lead us to conjecture the existence of a light, long-lived, low-energy excited state of two holes, which enables near-resonant interactions. To put our theory to a test we suggest to use coincidence angle-resolved photoemission spectroscopy (cARPES), pair-tunneling measurements or pump-probe experiments. The emergent Feshbach resonance among spin-polarons could also underlie superconductivity in other doped antiferromagnetic Mott insulators highlighting its potential as a unifying strong-coupling pairing mechanism rooted in quantum magnetism.https://doi.org/10.1038/s41467-024-55549-4 |
| spellingShingle | Lukas Homeier Hannah Lange Eugene Demler Annabelle Bohrdt Fabian Grusdt Feshbach hypothesis of high-Tc superconductivity in cuprates Nature Communications |
| title | Feshbach hypothesis of high-Tc superconductivity in cuprates |
| title_full | Feshbach hypothesis of high-Tc superconductivity in cuprates |
| title_fullStr | Feshbach hypothesis of high-Tc superconductivity in cuprates |
| title_full_unstemmed | Feshbach hypothesis of high-Tc superconductivity in cuprates |
| title_short | Feshbach hypothesis of high-Tc superconductivity in cuprates |
| title_sort | feshbach hypothesis of high tc superconductivity in cuprates |
| url | https://doi.org/10.1038/s41467-024-55549-4 |
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