English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

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

MPS-Authors
/persons/resource/persons195511

Kumar,  Nitesh
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126847

Shekhar,  Chandra
Chandra Shekhar, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126601

Felser,  Claudia
Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

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.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-A6A2-3
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.