| Title: |
Tunneling spectroscopy of the spinon-Kondo effect in one-dimensional Mott insulators |
| Authors: |
Pereira, Rodrigo G.; Marquez, Bruno F.; Hallberg, Karen; Bauer, Tim; Egger, Reinhold |
| Source: |
Phys. Rev. B 113, 045402 (2026) |
| Publication Year: |
2025 |
| Subject Terms: |
Strongly Correlated Electrons |
| Description: |
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.; 9 pages, 5 figures |
| Document Type: |
Working Paper |
| DOI: |
10.1103/wkmx-772j |
| Access URL: |
http://arxiv.org/abs/2508.19084 |
| Accession Number: |
edsarx.2508.19084 |
| Database: |
arXiv |