Single Crystal Growth and Nano-Structure Study in a Topological Dirac Metal, CoTe2-δ
| Autor: | Lei Chen, Weiyao Zhao, Ren-Kui Zheng |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Crystals, Vol 14, Iss 1, p 46 (2023) |
| Druh dokumentu: | article |
| ISSN: | 14010046 2073-4352 |
| DOI: | 10.3390/cryst14010046 |
| Popis: | A single crystal of a topological material, CoTe2-δ, 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 CoTe2-δ crystal was observed. Fractal features and mosaic-type nanostructures were observed on the as-grown surface and cleaved surface, respectively. The trigonal CoTe2-δ demonstrates a metallic ground state in transport measurements, with a typical carrier’s concentration in a 1021 cm−3 magnitude and a residual resistivity ratio of 1.6. Below 10 K, trigonal CoTe2-δ contains quite complicated magnetoresistance behavior as a result of the competing effect between Dirac states and possible spin fluctuations. |
| Databáze: | Directory of Open Access Journals |
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