Magneto-optic signatures in the gapped Dirac semimetal with mixed linear and parabolic dispersions of ZrTe5
In this paper, we give a systematic theoretical study on the Landau levels (LLs) and magneto-optical conductivity Re( σ _αα ) in a gapped Dirac semimetal model with mixed linear and parabolic dispersions under a magnetic field, which was recently proposed by Jiang et al (2020 Phys. Rev. Lett. 125...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/ac3e1a |
| _version_ | 1797748575669583872 |
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| author | Le You Zi-Yue Zhang Yi-Xiang Wang |
| author_facet | Le You Zi-Yue Zhang Yi-Xiang Wang |
| author_sort | Le You |
| collection | DOAJ |
| description | In this paper, we give a systematic theoretical study on the Landau levels (LLs) and magneto-optical conductivity Re( σ _αα ) in a gapped Dirac semimetal model with mixed linear and parabolic dispersions under a magnetic field, which was recently proposed by Jiang et al (2020 Phys. Rev. Lett.
125 046403 125
125 046403 ) to explain the experimental magnetoinfrared spectroscopy in the three-dimensional ZrTe _5 crystal. We find that the strong magnetic field can drive the LLs become noninverted and thus the strong topological insulator phase in ZrTe _5 turns to be a trivial insulator. In the different magnetic field regions, the density of states and Re( σ _αα ) can exhibit distinct signatures. Moreover, when the magnetic field is weak, a qualitative relation in Re( σ _zz ) between the peaks at the saddle points is revealed as Re $({\sigma }_{zz}^{{\zeta }_{n}}) > $ Re $({\sigma }_{zz}^{{\Gamma}})$ , which is in good agreement with the experiment. |
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| id | doaj.art-a1b9aaf5ecdd4ee5a7f204164ef7c129 |
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| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:06:46Z |
| publishDate | 2021-01-01 |
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| spelling | doaj.art-a1b9aaf5ecdd4ee5a7f204164ef7c1292023-08-09T14:19:13ZengIOP PublishingNew Journal of Physics1367-26302021-01-01231212303310.1088/1367-2630/ac3e1aMagneto-optic signatures in the gapped Dirac semimetal with mixed linear and parabolic dispersions of ZrTe5Le You0Zi-Yue Zhang1Yi-Xiang Wang2School of Science, Jiangnan University , Wuxi 214122, People’s Republic of ChinaSchool of Science, Jiangnan University , Wuxi 214122, People’s Republic of ChinaSchool of Science, Jiangnan University , Wuxi 214122, People’s Republic of China; School of Physics and Electronics, Hunan University , Changsha 410082, People’s Republic of ChinaIn this paper, we give a systematic theoretical study on the Landau levels (LLs) and magneto-optical conductivity Re( σ _αα ) in a gapped Dirac semimetal model with mixed linear and parabolic dispersions under a magnetic field, which was recently proposed by Jiang et al (2020 Phys. Rev. Lett. 125 046403 125 125 046403 ) to explain the experimental magnetoinfrared spectroscopy in the three-dimensional ZrTe _5 crystal. We find that the strong magnetic field can drive the LLs become noninverted and thus the strong topological insulator phase in ZrTe _5 turns to be a trivial insulator. In the different magnetic field regions, the density of states and Re( σ _αα ) can exhibit distinct signatures. Moreover, when the magnetic field is weak, a qualitative relation in Re( σ _zz ) between the peaks at the saddle points is revealed as Re $({\sigma }_{zz}^{{\zeta }_{n}}) > $ Re $({\sigma }_{zz}^{{\Gamma}})$ , which is in good agreement with the experiment.https://doi.org/10.1088/1367-2630/ac3e1aDirac semimetal modelLandau levelsoptical conductivity |
| spellingShingle | Le You Zi-Yue Zhang Yi-Xiang Wang Magneto-optic signatures in the gapped Dirac semimetal with mixed linear and parabolic dispersions of ZrTe5 New Journal of Physics Dirac semimetal model Landau levels optical conductivity |
| title | Magneto-optic signatures in the gapped Dirac semimetal with mixed linear and parabolic dispersions of ZrTe5 |
| title_full | Magneto-optic signatures in the gapped Dirac semimetal with mixed linear and parabolic dispersions of ZrTe5 |
| title_fullStr | Magneto-optic signatures in the gapped Dirac semimetal with mixed linear and parabolic dispersions of ZrTe5 |
| title_full_unstemmed | Magneto-optic signatures in the gapped Dirac semimetal with mixed linear and parabolic dispersions of ZrTe5 |
| title_short | Magneto-optic signatures in the gapped Dirac semimetal with mixed linear and parabolic dispersions of ZrTe5 |
| title_sort | magneto optic signatures in the gapped dirac semimetal with mixed linear and parabolic dispersions of zrte5 |
| topic | Dirac semimetal model Landau levels optical conductivity |
| url | https://doi.org/10.1088/1367-2630/ac3e1a |
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