Tunneling spectroscopy of the spinon-Kondo effect in one-dimensional Mott insulators
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866914233604636672 |
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| author | Pereira, Rodrigo G. Marquez, Bruno F. Hallberg, Karen Bauer, Tim Egger, Reinhold |
| author_facet | Pereira, Rodrigo G. Marquez, Bruno F. Hallberg, Karen Bauer, Tim Egger, Reinhold |
| contents | We study the tunneling density of states (TDOS) in one-dimensional Mott insulators at energies below the charge gap. By employing nonlinear Luttinger liquid theory and density-matrix renormalization group (DMRG) simulations, we predict that in the presence of a magnetic impurity at the boundary, characteristic Fermi-edge singularity features can appear at subgap energies in the TDOS near the boundary. In contrast to the Kondo effect in a metal, these resonances are strongly asymmetric and of power-law form. The power-law exponent is universal and determined by the spinon-Kondo effect. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_19084 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Tunneling spectroscopy of the spinon-Kondo effect in one-dimensional Mott insulators Pereira, Rodrigo G. Marquez, Bruno F. Hallberg, Karen Bauer, Tim Egger, Reinhold Strongly Correlated Electrons We study the tunneling density of states (TDOS) in one-dimensional Mott insulators at energies below the charge gap. By employing nonlinear Luttinger liquid theory and density-matrix renormalization group (DMRG) simulations, we predict that in the presence of a magnetic impurity at the boundary, characteristic Fermi-edge singularity features can appear at subgap energies in the TDOS near the boundary. In contrast to the Kondo effect in a metal, these resonances are strongly asymmetric and of power-law form. The power-law exponent is universal and determined by the spinon-Kondo effect. |
| title | Tunneling spectroscopy of the spinon-Kondo effect in one-dimensional Mott insulators |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2508.19084 |