تقرير
Magneto-optical response of the Weyl semimetal NbAs: Experimental results and hyperbolic-band computations
| العنوان: | Magneto-optical response of the Weyl semimetal NbAs: Experimental results and hyperbolic-band computations |
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| المؤلفون: | Polatkan, S., Uykur, E., Wyzula, J., Orlita, M., Shekhar, C., Felser, C., Dressel, M., Pronin, A. V. |
| المصدر: | Phys. Rev. B 108, L241201 (2023) |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| الوصف: | The magneto-optical properties of (001)-oriented NbAs single crystals have been studied in the spectral range from 5 to 150 meV and in magnetic fields of up to 13 T. A rich spectrum of inter-Landau-level transitions is revealed by these measurements. The transitions follow a square-root-like dependence with magnetic field, but the simple linear-band approximation is unable to accurately reproduce the observed behavior of the transitions in applied fields. We argue that the detected magneto-optical spectra should be related to crossing hyperbolic bands, which form the W1 cones. We propose a model Hamiltonian, which describes coupled hyperbolic bands and reproduces the shape of the relevant bands in NbAs. The magneto-optical spectra computed from this Hamiltonian nicely reproduce our observations. We conclude that the hyperbolic-band approach is a minimal model to adequately describe the magneto-optical response of NbAs and that the chiral (conical) bands do not explicitly manifest themselves in the spectra. Comment: 10 pages, SM included |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.108.L241201 |
| URL الوصول: | http://arxiv.org/abs/2312.03094 |
| رقم الأكسشن: | edsarx.2312.03094 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.108.L241201 |
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