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Open AccessArticle

Growth and Strain Engineering of Trigonal Te for Topological Quantum Phases in Non-Symmorphic Chiral Crystals

1
Department of Physics, University of Arkansas, Fayetteville, NC 72701, USA
2
Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, NC 72701, USA
3
Microelectronics-Photonics Graduate Program, University of Arkansas, Fayetteville, NC 72701, USA
*
Authors to whom correspondence should be addressed.
Crystals 2019, 9(10), 486; https://doi.org/10.3390/cryst9100486
Received: 22 August 2019 / Revised: 9 September 2019 / Accepted: 14 September 2019 / Published: 20 September 2019
(This article belongs to the Special Issue Recent Advances in Novel Topological Materials)
Strained trigonal Te has been predicted to host Weyl nodes supported by a non-symmorphic chiral symmetry. Using low-pressure physical vapor deposition, we systematically explored the growth of trigonal Te nanowires with naturally occurring strain caused by curvature of the wires. Raman spectra and high mobility electronic transport attest to the highly crystalline nature of the wires. Comparison of Raman spectra for both straight and curved nanowires indicates a breathing mode that is significantly broader and shifted in frequency for the curved wires. Strain induced by curvature during growth therefore may provide a simple pathway to investigate topological phases in trigonal Te. View Full-Text
Keywords: Weyl semimetal; nanowire; topological semimetal; strain engineering; helical materials Weyl semimetal; nanowire; topological semimetal; strain engineering; helical materials
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MDPI and ACS Style

Basnet, R.; Doha, M.H.; Hironaka, T.; Pandey, K.; Davari, S.; Welch, K.M.; Churchill, H.O.H.; Hu, J. Growth and Strain Engineering of Trigonal Te for Topological Quantum Phases in Non-Symmorphic Chiral Crystals. Crystals 2019, 9, 486.

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