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Tungsten ditelluride (WTe2) is an inorganic semimetallic chemical compound. In October 2014, tungsten ditelluride was discovered to exhibit an extremely large magnetoresistance: 13 million percent resistance increase in a magnetic field of 60 tesla at 0.5 kelvin. The resistance is proportional to the square of the magnetic field and shows no saturation. This may be due to the material being the first example of a compensated semimetal, in which the number of mobile holes is the same as the number of electrons. Tungsten ditelluride has layered structure, similar to many other transition metal dichalcogenides, but its layers are so distorted that the honeycomb lattice many of them have in common is in WTe2 hard to recognize. The tungsten atoms instead form zigzag chains, which are thought to behave as one-dimensional conductors. Unlike electrons in other two-dimensional semiconductors, the electrons in WTe2 can easily move between the layers.
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References
- 1 2 Das, Dhiman Kumar; Sarkar, Jit; Singh, S. K. (2018-08-01). "Effect of sample size, temperature and strain velocity on mechanical properties of plumbene by tensile loading along longitudinal direction: A molecular dynamics study". Computational Materials Science. 151: 196–203. doi:10.1016/j.commatsci.2018.05.006. S2CID 139217230.
- ↑ Wang, Pei-ji; Ping Li; Zhang, Bao-min; Yan, Shi-shen; Sheng-shi Li; Zhang, Run-wu; Ji, Wei-xiao; Yan, Shi-shen; Zhang, Chang-wen (2016-02-02). "Unexpected Giant-Gap Quantum Spin Hall Insulator in Chemically Decorated Plumbene Monolayer". Scientific Reports. Nature. 6: 20152. Bibcode:2016NatSR...620152Z. doi:10.1038/srep20152. PMC 4735859 . PMID 26833133.
- ↑ Zhang, Liang; Zhao, Hui; Ji, Wei-xiao; Zhang, Chang-wen; Li, Ping; Wang, Pei-ji (2018). "Discovery of a new quantum spin Hall phase in bilayer plumbene". Chemical Physics Letters. 712: 78–82. Bibcode:2018CPL...712...78Z. doi:10.1016/j.cplett.2018.09.016. ISSN 0009-2614. S2CID 105573942.
- ↑ Yuhara, J.; He, B.; Le Lay, G. (2019). "Graphene's Latest Cousin: Plumbene Epitaxial Growth on a "Nano WaterCube"". Advanced Materials. 31 (27): 1901017. Bibcode:2019AdM....3101017Y. doi:10.1002/adma.201901017. PMID 31074927. S2CID 149446617.
- ↑ Yu, X.-L.; Huang, L.; Wu, J. (2017), "From a normal insulator to a topological insulator in plumbene", Physical Review B, 95 (12): 125113, arXiv: 1702.07447 , Bibcode:2017PhRvB..95l5113Y, doi:10.1103/PhysRevB.95.125113, S2CID 119076198