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Scientific paper - Letter
Addressing shape and extent of Weyl cones in TaAs by Landau level spectroscopy
Physical Review B (condensed matter and materials physics), 105 (2022), 8; L081114. https://doi.org/10.1103/PhysRevB.105.L081114
Santos-Cottin, D.; Wyzula, J.; Le Mardelé, F.; Crassee, I.; Martino, E.; Novák, J.; Eguchi, G.; Rukelj, Zoran; Novak, M.; Orlita, M; Akrap, Ana

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Santos Cottin, D., Wyzula, J., Le Mardelé, F., Crassee, I., Martino, E., Novák, J. ... Akrap, A. (2022). Addressing shape and extent of Weyl cones in TaAs by Landau level spectroscopy. Physical Review B (condensed matter and materials physics), 105. (8). doi: 10.1103/PhysRevB.105.L081114

Santos Cottin, D., et al. "Addressing shape and extent of Weyl cones in TaAs by Landau level spectroscopy." Physical Review B (condensed matter and materials physics), vol. 105, no. 8, 2022. https://doi.org/10.1103/PhysRevB.105.L081114

Santos Cottin, D., J. Wyzula, F. Le Mardelé, I. Crassee, E. Martino, J. Novák, G. Eguchi, et al. "Addressing shape and extent of Weyl cones in TaAs by Landau level spectroscopy." Physical Review B (condensed matter and materials physics) 105, no. 8 (2022). https://doi.org/10.1103/PhysRevB.105.L081114

Santos Cottin, D., et al. (2022) 'Addressing shape and extent of Weyl cones in TaAs by Landau level spectroscopy', Physical Review B (condensed matter and materials physics), 105(8). doi: 10.1103/PhysRevB.105.L081114

Santos Cottin D, Wyzula J, Le Mardelé F, Crassee I, Martino E, Novák J, and sur.. Addressing shape and extent of Weyl cones in TaAs by Landau level spectroscopy. Physical Review B (condensed matter and materials physics) [Internet]. 2022 February [cited 2025 January 11];105(8). doi: 10.1103/PhysRevB.105.L081114

D. Santos Cottin, et al., "Addressing shape and extent of Weyl cones in TaAs by Landau level spectroscopy", Physical Review B (condensed matter and materials physics), vol. 105, no. 8, February 2022. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:115574. [Accessed: 11 January 2025]

Metadata
Title (english)Addressing shape and extent of Weyl cones in TaAs by Landau level spectroscopy
AuthorD. Santos-Cottin
AuthorJ. Wyzula
AuthorF. Le Mardelé
AuthorI. Crassee
AuthorE. Martino
AuthorJ. Novák
AuthorG. Eguchi
AuthorZoran Rukelj
AuthorM. Novak
AuthorM Orlita
AuthorAna Akrap
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
TaAs is a prime example of a topological semimetal with two types of Weyl nodes, W_1 and W_2, whose bulk signatures have proven elusive. We apply Landau level spectroscopy to crystals with multiple facets and identify— among other low-energy excitations between parabolic bands—the response of a cone extending over a wide energy range. Comparison with density functional theory studies allows us to associate this conical band with nearly isotropic W_2 nodes. In contrast, W_1 cones, which are more anisotropic and less extended in energy, appear to be buried too deep beneath the Fermi level. They cannot be accessed directly. Instead, the excitations in their vicinity give rise to an optical response typical of a narrow-gap semiconductor rather than a Weyl semimetal.
Keywords (english)
Languageenglish
Publication typeScientific paper - Letter
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review B (condensed matter and materials physics)
Numberingvol. 105, no. 8, L081114
p-ISSN2469-9950
e-ISSN2469-9969
DOIhttps://doi.org/10.1103/PhysRevB.105.L081114
URN:NBNurn:nbn:hr:217:115574
Publication2022-02
Document URLhttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.105.L081114
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public note© 2022 American Physical Society. Received 20 November 2021; accepted 10 February 2022; published 25 February 2022.
Created on2024-08-21 09:53:44