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  Polymorphic Layered MoTe2 from Semiconductor, Topological Insulator, to Weyl Semimetal

Sankar, R., Rao, G. N., Muthuselvam, I. P., Butler, C., Kumar, N., Murugan, G. S., et al. (2017). Polymorphic Layered MoTe2 from Semiconductor, Topological Insulator, to Weyl Semimetal. Chemistry of Materials, 29(2), 699-707. doi:10.1021/acs.chemmater.6b04363.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-A6A2-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-9CBD-B
Genre: Journal Article

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 Creators:
Sankar, Raman1, Author
Rao, G. Narsinga1, Author
Muthuselvam, I. Panneer1, Author
Butler, Christopher1, Author
Kumar, Nitesh2, Author              
Murugan, G. Senthil1, Author
Shekhar, Chandra3, Author              
Chang, Tay-Rong1, Author
Wen, Cheng-Yen1, Author
Chen, Chun-Wei1, Author
Lee, Wei-Li1, Author
Lin, M.-T.1, Author
Jeng, Horng-Tay1, Author
Felser, Claudia4, Author              
Chou, F. C.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Chandra Shekhar, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863428              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: Large size (similar to 2 cm) single crystals of layered MoTe2 in both 2H- and 1T'-types were synthsized using TeBr4 as the source of Br-2 transport agent in chemical vapor transport growth. The crystal structures of the as-grown single crystals were fully characterized by X-ray diffraction, Raman spectroscopy, scanning transmission electron microscopy, scanning tunneling microscopy (STM), and electrical resistivity (rho) measurements. The resistivity rho(T), magnetic susceptibility chi(T), and heat capacity C-p(T) measurement results reveal a first order structural phase transition near similar to 240 K for 1T'-MoTe2, which has been identified to be the orthorhombic Td-phase of MoTe2 as a candidate of Weyl semimetal. The STM study revealed different local defect geometries found on the surface of 2H- and Td-types of MoTe6 units in trigonal prismatic and distorted octahedral coordination, respectively.

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Language(s): eng - English
 Dates: 2017-02-202017-02-20
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1021/acs.chemmater.6b04363
 Degree: -

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Title: Chemistry of Materials
  Abbreviation : Chem. Mater.
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 29 (2) Sequence Number: - Start / End Page: 699 - 707 Identifier: ISSN: 0897-4756
CoNE: https://pure.mpg.de/cone/journals/resource/954925561571