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- Publisher Website: 10.1038/s41598-021-87302-y
- Scopus: eid_2-s2.0-85104413411
- PMID: 33854110
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Article: A Raman probe of phonons and electron–phonon interactions in the Weyl semimetal NbIrTe4
Title | A Raman probe of phonons and electron–phonon interactions in the Weyl semimetal NbIrTe4 |
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Authors | |
Issue Date | 14-Apr-2021 |
Publisher | Nature Research |
Citation | Scientific Reports, 2021, v. 11, n. 1, p. 1-12 How to Cite? |
Abstract | There is tremendous interest in measuring the strong electron–phonon interactions seen in topological Weyl semimetals. The semimetal NbIrTe4 has been proposed to be a Type-II Weyl semimetal with 8 pairs of opposite Chirality Weyl nodes which are very close to the Fermi energy. We show using polarized angular-resolved micro-Raman scattering at two excitation energies that we can extract the phonon mode dependence of the Raman tensor elements from the shape of the scattering efficiency versus angle. This van der Waals semimetal with broken inversion symmetry and 24 atoms per unit cell has 69 possible phonon modes of which we measure 19 modes with frequencies and symmetries consistent with Density Functional Theory calculations. We show that these tensor elements vary substantially in a small energy range which reflects a strong variation of the electron–phonon coupling for these modes. |
Persistent Identifier | http://hdl.handle.net/10722/345466 |
DC Field | Value | Language |
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dc.contributor.author | Shojaei, Iraj Abbasian | - |
dc.contributor.author | Pournia, Seyyedesadaf | - |
dc.contributor.author | Le, Congcong | - |
dc.contributor.author | Ortiz, Brenden R | - |
dc.contributor.author | Jnawali, Giriraj | - |
dc.contributor.author | Zhang, Fu Chun | - |
dc.contributor.author | Wilson, Stephen D | - |
dc.contributor.author | Jackson, Howard E | - |
dc.contributor.author | Smith, Leigh M | - |
dc.date.accessioned | 2024-08-27T09:08:55Z | - |
dc.date.available | 2024-08-27T09:08:55Z | - |
dc.date.issued | 2021-04-14 | - |
dc.identifier.citation | Scientific Reports, 2021, v. 11, n. 1, p. 1-12 | - |
dc.identifier.uri | http://hdl.handle.net/10722/345466 | - |
dc.description.abstract | There is tremendous interest in measuring the strong electron–phonon interactions seen in topological Weyl semimetals. The semimetal NbIrTe4 has been proposed to be a Type-II Weyl semimetal with 8 pairs of opposite Chirality Weyl nodes which are very close to the Fermi energy. We show using polarized angular-resolved micro-Raman scattering at two excitation energies that we can extract the phonon mode dependence of the Raman tensor elements from the shape of the scattering efficiency versus angle. This van der Waals semimetal with broken inversion symmetry and 24 atoms per unit cell has 69 possible phonon modes of which we measure 19 modes with frequencies and symmetries consistent with Density Functional Theory calculations. We show that these tensor elements vary substantially in a small energy range which reflects a strong variation of the electron–phonon coupling for these modes. | - |
dc.language | eng | - |
dc.publisher | Nature Research | - |
dc.relation.ispartof | Scientific Reports | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.title | A Raman probe of phonons and electron–phonon interactions in the Weyl semimetal NbIrTe4 | - |
dc.type | Article | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1038/s41598-021-87302-y | - |
dc.identifier.pmid | 33854110 | - |
dc.identifier.scopus | eid_2-s2.0-85104413411 | - |
dc.identifier.volume | 11 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 1 | - |
dc.identifier.epage | 12 | - |
dc.identifier.eissn | 2045-2322 | - |
dc.identifier.issnl | 2045-2322 | - |