Molecular beam epitaxy of three-dimensionally thick Dirac semimetal Cd3As2 films
Rapid progress of quantum transport study in topological Dirac semimetal, including observations of quantum Hall effect in two-dimensional (2D) Cd3As2 samples, has uncovered even more interesting quantum transport properties in high-quality and three-dimensional (3D) samples. However, such 3D Cd3As2...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2019-07-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/1.5098529 |
| _version_ | 1818987270212943872 |
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| author | Y. Nakazawa M. Uchida S. Nishihaya S. Sato A. Nakao J. Matsuno M. Kawasaki |
| author_facet | Y. Nakazawa M. Uchida S. Nishihaya S. Sato A. Nakao J. Matsuno M. Kawasaki |
| author_sort | Y. Nakazawa |
| collection | DOAJ |
| description | Rapid progress of quantum transport study in topological Dirac semimetal, including observations of quantum Hall effect in two-dimensional (2D) Cd3As2 samples, has uncovered even more interesting quantum transport properties in high-quality and three-dimensional (3D) samples. However, such 3D Cd3As2 films with low carrier density and high electron mobility have been hardly obtained. Here, we report the growth and characterization of 3D thick Cd3As2 films adopting molecular beam epitaxy. The highest electron mobility (μ = 3 × 104 cm2/Vs) among the reported film samples has been achieved at a low carrier density (n = 5 × 1016 cm−3). In the magnetotransport measurement, Hall plateau-like structures are commonly observed despite the 3D thick films (t = 120 nm). On the other hand, the field angle dependence of the plateau-like structures and corresponding Shubunikov-de Haas oscillations rather shows a 3D feature, suggesting the appearance of an unconventional magnetic orbit, also distinct from the one described by the semiclassical Weyl-orbit equation. |
| first_indexed | 2024-12-20T19:04:01Z |
| format | Article |
| id | doaj.art-e8400719d78649808c62b000a6fd925b |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-12-20T19:04:01Z |
| publishDate | 2019-07-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-e8400719d78649808c62b000a6fd925b2022-12-21T19:29:20ZengAIP Publishing LLCAPL Materials2166-532X2019-07-0177071109071109-510.1063/1.5098529011907APMMolecular beam epitaxy of three-dimensionally thick Dirac semimetal Cd3As2 filmsY. Nakazawa0M. Uchida1S. Nishihaya2S. Sato3A. Nakao4J. Matsuno5M. Kawasaki6Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), The University of Tokyo, Tokyo 113-8656, JapanDepartment of Applied Physics and Quantum-Phase Electronics Center (QPEC), The University of Tokyo, Tokyo 113-8656, JapanDepartment of Applied Physics and Quantum-Phase Electronics Center (QPEC), The University of Tokyo, Tokyo 113-8656, JapanDepartment of Applied Physics and Quantum-Phase Electronics Center (QPEC), The University of Tokyo, Tokyo 113-8656, JapanRIKEN Bioengineering Laboratory, Wako 351-0198, JapanDepartment of Physics, Osaka University, Osaka 560-0043, JapanDepartment of Applied Physics and Quantum-Phase Electronics Center (QPEC), The University of Tokyo, Tokyo 113-8656, JapanRapid progress of quantum transport study in topological Dirac semimetal, including observations of quantum Hall effect in two-dimensional (2D) Cd3As2 samples, has uncovered even more interesting quantum transport properties in high-quality and three-dimensional (3D) samples. However, such 3D Cd3As2 films with low carrier density and high electron mobility have been hardly obtained. Here, we report the growth and characterization of 3D thick Cd3As2 films adopting molecular beam epitaxy. The highest electron mobility (μ = 3 × 104 cm2/Vs) among the reported film samples has been achieved at a low carrier density (n = 5 × 1016 cm−3). In the magnetotransport measurement, Hall plateau-like structures are commonly observed despite the 3D thick films (t = 120 nm). On the other hand, the field angle dependence of the plateau-like structures and corresponding Shubunikov-de Haas oscillations rather shows a 3D feature, suggesting the appearance of an unconventional magnetic orbit, also distinct from the one described by the semiclassical Weyl-orbit equation.http://dx.doi.org/10.1063/1.5098529 |
| spellingShingle | Y. Nakazawa M. Uchida S. Nishihaya S. Sato A. Nakao J. Matsuno M. Kawasaki Molecular beam epitaxy of three-dimensionally thick Dirac semimetal Cd3As2 films APL Materials |
| title | Molecular beam epitaxy of three-dimensionally thick Dirac semimetal Cd3As2 films |
| title_full | Molecular beam epitaxy of three-dimensionally thick Dirac semimetal Cd3As2 films |
| title_fullStr | Molecular beam epitaxy of three-dimensionally thick Dirac semimetal Cd3As2 films |
| title_full_unstemmed | Molecular beam epitaxy of three-dimensionally thick Dirac semimetal Cd3As2 films |
| title_short | Molecular beam epitaxy of three-dimensionally thick Dirac semimetal Cd3As2 films |
| title_sort | molecular beam epitaxy of three dimensionally thick dirac semimetal cd3as2 films |
| url | http://dx.doi.org/10.1063/1.5098529 |
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