Selective enhancement of Coulomb interactions in planar Weyl fermions
Fuente:
arXiv
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866913772761776128 |
|---|---|
| author | Apalkov, Vadym Luo, Wenchen Chakraborty, Tapash |
| author_facet | Apalkov, Vadym Luo, Wenchen Chakraborty, Tapash |
| contents | We report on our study of the electron interaction effects in topological two-dimensional (2D) materials placed in a quantizing magnetic field. Taking our cue from a recent experimental report, we consider a particular case of bismuthene monolayer with a strong spin-orbit interaction which can be a Weyl semimetal when placed on a specially tuned substrate. Interestingly, we observe that in some Landau levels of this material, the interaction effects are strongly enhanced compared to those for a conventional 2D system. Such an enhancement of electron-electron interactions in these materials is largely due to an anisotropy present in the materials. Additionally, the interaction effects can be tuned by changing the coupling to the substrate and the strongest inter-electron interactions are observed when the system is a Weyl semimental. The observed enhancement of the interaction effects can therefore be an important signature of the 2D Weyl fermions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_14128 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Selective enhancement of Coulomb interactions in planar Weyl fermions Apalkov, Vadym Luo, Wenchen Chakraborty, Tapash Mesoscale and Nanoscale Physics Strongly Correlated Electrons We report on our study of the electron interaction effects in topological two-dimensional (2D) materials placed in a quantizing magnetic field. Taking our cue from a recent experimental report, we consider a particular case of bismuthene monolayer with a strong spin-orbit interaction which can be a Weyl semimetal when placed on a specially tuned substrate. Interestingly, we observe that in some Landau levels of this material, the interaction effects are strongly enhanced compared to those for a conventional 2D system. Such an enhancement of electron-electron interactions in these materials is largely due to an anisotropy present in the materials. Additionally, the interaction effects can be tuned by changing the coupling to the substrate and the strongest inter-electron interactions are observed when the system is a Weyl semimental. The observed enhancement of the interaction effects can therefore be an important signature of the 2D Weyl fermions. |
| title | Selective enhancement of Coulomb interactions in planar Weyl fermions |
| topic | Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2501.14128 |