| SANTOS-COTTIN, D., J. WYZULA, F. LE MARDELÉ, I. CRASSEE, E. MARTINO, Jiří NOVÁK, G. EGUCHI, Z. RUKELJ, M. NOVAK, M. ORLITA a Ana AKRAP. Addressing shape and extent of Weyl cones in TaAs by Landau level spectroscopy. Physical Review B. College PK: The American Physical Society, 2022, roč. 105, č. 8, s. "L081114-1"-"L081114-5", 5 s. ISSN 2469-9950. Dostupné z: https://dx.doi.org/10.1103/PhysRevB.105.L081114. |
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@article{1843012,
author = {SantosandCottin, D. and Wyzula, J. and Le Mardelé, F. and Crassee, I. and Martino, E. and Novák, Jiří and Eguchi, G. and Rukelj, Z. and Novak, M. and Orlita, M. and Akrap, Ana},
article_location = {College PK},
article_number = {8},
doi = {http://dx.doi.org/10.1103/PhysRevB.105.L081114},
keywords = {Weyl semimetal; Landau level spectroscopy; magneto-optics; TaAs},
language = {eng},
issn = {2469-9950},
journal = {Physical Review B},
title = {Addressing shape and extent of Weyl cones in TaAs by Landau level spectroscopy},
url = {https://journals.aps.org/prb/abstract/10.1103/PhysRevB.105.L081114},
volume = {105},
year = {2022}
}
TY - JOUR
ID - 1843012
AU - Santos-Cottin, D. - Wyzula, J. - Le Mardelé, F. - Crassee, I. - Martino, E. - Novák, Jiří - Eguchi, G. - Rukelj, Z. - Novak, M. - Orlita, M. - Akrap, Ana
PY - 2022
TI - Addressing shape and extent of Weyl cones in TaAs by Landau level spectroscopy
JF - Physical Review B
VL - 105
IS - 8
SP - "L081114-1"-"L081114-5"
EP - "L081114-1"-"L081114-5"
PB - The American Physical Society
SN - 24699950
KW - Weyl semimetal
KW - Landau level spectroscopy
KW - magneto-optics
KW - TaAs
UR - https://journals.aps.org/prb/abstract/10.1103/PhysRevB.105.L081114
N2 - 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.
ER -
SANTOS-COTTIN, D., J. WYZULA, F. LE MARDELÉ, I. CRASSEE, E. MARTINO, Jiří NOVÁK, G. EGUCHI, Z. RUKELJ, M. NOVAK, M. ORLITA a Ana AKRAP. Addressing shape and extent of Weyl cones in TaAs by Landau level spectroscopy. \textit{Physical Review B}. College PK: The American Physical Society, 2022, roč.~105, č.~8, s.~''L081114-1''-''L081114-5'', 5 s. ISSN~2469-9950. Dostupné z: https://dx.doi.org/10.1103/PhysRevB.105.L081114.
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