Single Crystal Growth and Nano-Structure Study in a Topological Dirac Metal, CoTe<sub>2-δ</sub>
A single crystal of a topological material, CoTe<sub>2-δ</sub>, has been grown via the chemical vapor transport method for a structural and electronic transport study. Single-crystal X-ray diffraction, powder X-ray diffraction, and high-resolution scanning electron microscope measurement...
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MDPI AG
2023-12-01
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| Online Access: | https://www.mdpi.com/2073-4352/14/1/46 |
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| author | Lei Chen Weiyao Zhao Ren-Kui Zheng |
| author_facet | Lei Chen Weiyao Zhao Ren-Kui Zheng |
| author_sort | Lei Chen |
| collection | DOAJ |
| description | A single crystal of a topological material, CoTe<sub>2-δ</sub>, has been grown via the chemical vapor transport method for a structural and electronic transport study. Single-crystal X-ray diffraction, powder X-ray diffraction, and high-resolution scanning electron microscope measurements confirm the high quality of the as-grown single crystals. In a high-resolution scanning electron microscopy study, a clear layered feature of the trigonal CoTe<sub>2-δ</sub> crystal was observed. Fractal features and mosaic-type nanostructures were observed on the as-grown surface and cleaved surface, respectively. The trigonal CoTe<sub>2-δ</sub> demonstrates a metallic ground state in transport measurements, with a typical carrier’s concentration in a 10<sup>21</sup> cm<sup>−3</sup> magnitude and a residual resistivity ratio of 1.6. Below 10 K, trigonal CoTe<sub>2-δ</sub> contains quite complicated magnetoresistance behavior as a result of the competing effect between Dirac states and possible spin fluctuations. |
| first_indexed | 2024-03-08T09:55:38Z |
| format | Article |
| id | doaj.art-34419f8f0f9b48919c57630f8f28931f |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-08T09:55:38Z |
| publishDate | 2023-12-01 |
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| series | Crystals |
| spelling | doaj.art-34419f8f0f9b48919c57630f8f28931f2024-01-29T13:51:13ZengMDPI AGCrystals2073-43522023-12-011414610.3390/cryst14010046Single Crystal Growth and Nano-Structure Study in a Topological Dirac Metal, CoTe<sub>2-δ</sub>Lei Chen0Weiyao Zhao1Ren-Kui Zheng2School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, ChinaDepartment of Materials Science & Engineering, Monash University, Clayton, VIC 3800, AustraliaSchool of Physics and Materials Science, Guangzhou University, Guangzhou 510006, ChinaA single crystal of a topological material, CoTe<sub>2-δ</sub>, has been grown via the chemical vapor transport method for a structural and electronic transport study. Single-crystal X-ray diffraction, powder X-ray diffraction, and high-resolution scanning electron microscope measurements confirm the high quality of the as-grown single crystals. In a high-resolution scanning electron microscopy study, a clear layered feature of the trigonal CoTe<sub>2-δ</sub> crystal was observed. Fractal features and mosaic-type nanostructures were observed on the as-grown surface and cleaved surface, respectively. The trigonal CoTe<sub>2-δ</sub> demonstrates a metallic ground state in transport measurements, with a typical carrier’s concentration in a 10<sup>21</sup> cm<sup>−3</sup> magnitude and a residual resistivity ratio of 1.6. Below 10 K, trigonal CoTe<sub>2-δ</sub> contains quite complicated magnetoresistance behavior as a result of the competing effect between Dirac states and possible spin fluctuations.https://www.mdpi.com/2073-4352/14/1/46topological materialsingle crystal2D materialnanostructures |
| spellingShingle | Lei Chen Weiyao Zhao Ren-Kui Zheng Single Crystal Growth and Nano-Structure Study in a Topological Dirac Metal, CoTe<sub>2-δ</sub> Crystals topological material single crystal 2D material nanostructures |
| title | Single Crystal Growth and Nano-Structure Study in a Topological Dirac Metal, CoTe<sub>2-δ</sub> |
| title_full | Single Crystal Growth and Nano-Structure Study in a Topological Dirac Metal, CoTe<sub>2-δ</sub> |
| title_fullStr | Single Crystal Growth and Nano-Structure Study in a Topological Dirac Metal, CoTe<sub>2-δ</sub> |
| title_full_unstemmed | Single Crystal Growth and Nano-Structure Study in a Topological Dirac Metal, CoTe<sub>2-δ</sub> |
| title_short | Single Crystal Growth and Nano-Structure Study in a Topological Dirac Metal, CoTe<sub>2-δ</sub> |
| title_sort | single crystal growth and nano structure study in a topological dirac metal cote sub 2 δ sub |
| topic | topological material single crystal 2D material nanostructures |
| url | https://www.mdpi.com/2073-4352/14/1/46 |
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