Optical signatures of Dirac nodal lines in NbAs2
| Autor: | Shao, Yinming, Sun, Zhiyuan, Wang, Ying, Xu, Chenchao, Sankar, Raman, Breindel, Alexander J, Cao, Chao, Fogler, Michael M, Millis, Andrew J, Chou, Fangcheng, Li, Zhiqiang, Timusk, Thomas, Maple, M Brian, Basov, DN |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Proceedings of the National Academy of Sciences of the United States of America, vol 116, iss 4 Shao, Yinming; Sun, Zhiyuan; Wang, Ying; Xu, Chenchao; Sankar, Raman; Breindel, Alexander J; et al.(2018). Optical signatures of Dirac nodal lines in NbAs2.. Proceedings of the National Academy of Sciences of the United States of America, 116(4), 1168-1173. doi: 10.1073/pnas.1809631115. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/3z640146 |
| DOI: | 10.1073/pnas.1809631115. |
| Popis: | Using polarized optical and magneto-optical spectroscopy, we have demonstrated universal aspects of electrodynamics associated with Dirac nodal lines that are found in several classes of unconventional intermetallic compounds. We investigated anisotropic electrodynamics of [Formula: see text] where the spin-orbit coupling (SOC) triggers energy gaps along the nodal lines. These gaps manifest as sharp steps in the optical conductivity spectra [Formula: see text] This behavior is followed by the linear power-law scaling of [Formula: see text] at higher frequencies, consistent with our theoretical analysis for dispersive Dirac nodal lines. Magneto-optics data affirm the dominant role of nodal lines in the electrodynamics of [Formula: see text]. |
| Databáze: | OpenAIRE |
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