Emergence of topologically protected states in MoTe$_{2}$ Weyl semimetal with layer stacking order
| Autor: | Schneeloch, John A., Duan, Chunruo, Wang, Xiaoping, Liu, Jun, Yang, Junjie, Louca, Despina |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Phys. Rev. B 99, 161105 (2019) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.99.161105 |
| Popis: | Electronic tunability in crystals with weakly-bound layers can be achieved through layer stacking order. One such example is MoTe$_2$, where the low-temperature orthorhombic T$_d$ phase is topological and host to Weyl quasiparticles. The transition mechanism to the non-trivial topology is elucidated by single crystal neutron diffraction. Upon cooling from the monoclinic 1T$\prime$ to the T$_d$ phase, diffuse scattering accompanies the transition, arising from random, in-plane layer displacements, and dissipates upon entering the T$_d$ phase. Diffuse scattering is observed only in the H0L plane due to irreversible layer shifts along the c-axis that break the centrosymmetry of the monoclinic lattice. Comment: This paper contains 8 pages including references and supplement materials. 3 figures and 1 table |
| Databáze: | arXiv |
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