Schneeloch, J.
, Tao, Y.
, Duan, C.
, Matsuda, M.
, Aczel, A.
, Fernandez-Baca, J.
, Xu, G.
, Neuefeind, J.
, Yang, J.
and Louca, D.
(2020),
Evolution of the Structural Transition in Mo<sub>1-x</sub>W<sub>x</sub>Te<sub>2</sub>, Physical Review B, [online], https://doi.org/10.1103/PhysRevB.102.054105
(Accessed October 31, 2024)
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Evolution of the Structural Transition in Mo1-xWxTe2
Published
Author(s)
John A. Schneeloch, Yu Tao, Chunruo Duan, Masaaki Matsuda, Adam A. Aczel, Jaime A. Fernandez-Baca, , Jorg C. Neuefeind, Junjie Yang, Despina Louca
Abstract
The composition dependence of the structural transition between the monoclinic 1T′ and orthorhombic Td phases in the Mo1-xWxTe2 Weyl semimetal was investigated by elastic neutron scattering on single crystals up to x ≅ 0:54. First observed in MoTe2, the transition from Td to 1T′ is accompanied by an intermediate pseudo-orthorhombic phase, Td. Upon doping with W the Td phase vanishes by x ≅ 0:34. Above this concentration, a phase coexistence behavior with both Td and 1T′ is observed, instead. The interlayer in-plane positioning parameter, δ, which relates to the 1T′ β angle, decreases with temperature as well as with W substitution indicating strong anharmonicity of the layer displacements. The temperature width of the phase coexistence remains almost constant up to x ≅ 0:54, in contrast to the broadening reported with applying pressure.Citation
Physical Review B
Volume
102
Issue
5
Pub Type
Journals
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Keywords
Weyl Semimetal, neutron scattering, pressure
Citation
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Created August 24, 2020, Updated July 27, 2022