Electron-phonon interactions and instabilities in Weyl semimetals under magnetic fields and torsional strain
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| Format: | Preprint |
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2026
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| _version_ | 1866910006751789056 |
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| author | Parra, Fabian Jofre Bonilla, Daniel A. Muñoz, Enrique |
| author_facet | Parra, Fabian Jofre Bonilla, Daniel A. Muñoz, Enrique |
| contents | We study the presence of an external magnetic field, in combination with torsional strain, over the electron-phonon interactions in a type I Weyl semimetal. This particular superposition of field and strain, modeled in the continuum approximation by an effective gauge field, leads to an asymmetric pseudo-magnetic field at each Weyl node of opposite chirality. Therefore, we also studied the role of nodal asymmetry in the properties of the system by means of the Kadanoff-Wilson renormalization group and the corresponding flow equations. By solving those, we discuss the evolution of the coupling parameters of the theory, and analyze possible fixed points and lattice (Peierls) instabilities emerging from interactions between phonons with the chiral Landau level in the very strong pseudo-magnetic field regime. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2602_00441 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Electron-phonon interactions and instabilities in Weyl semimetals under magnetic fields and torsional strain Parra, Fabian Jofre Bonilla, Daniel A. Muñoz, Enrique Strongly Correlated Electrons Mesoscale and Nanoscale Physics We study the presence of an external magnetic field, in combination with torsional strain, over the electron-phonon interactions in a type I Weyl semimetal. This particular superposition of field and strain, modeled in the continuum approximation by an effective gauge field, leads to an asymmetric pseudo-magnetic field at each Weyl node of opposite chirality. Therefore, we also studied the role of nodal asymmetry in the properties of the system by means of the Kadanoff-Wilson renormalization group and the corresponding flow equations. By solving those, we discuss the evolution of the coupling parameters of the theory, and analyze possible fixed points and lattice (Peierls) instabilities emerging from interactions between phonons with the chiral Landau level in the very strong pseudo-magnetic field regime. |
| title | Electron-phonon interactions and instabilities in Weyl semimetals under magnetic fields and torsional strain |
| topic | Strongly Correlated Electrons Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2602.00441 |