Td to 1T′ structural phase transition in the WTe2 Weyl semimetal
| العنوان: | Td to 1T′ structural phase transition in the WTe2 Weyl semimetal |
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| المؤلفون: | Adam A. Aczel, Despina Louca, John A. Schneeloch, Yu Tao |
| المصدر: | Physical Review B. 102 |
| بيانات النشر: | American Physical Society (APS), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Physics, Diffraction, Condensed matter physics, Weyl semimetal, 02 engineering and technology, Crystal structure, Neutron scattering, 021001 nanoscience & nanotechnology, 01 natural sciences, Phase (matter), 0103 physical sciences, Orthorhombic crystal system, 010306 general physics, 0210 nano-technology, Single crystal, Monoclinic crystal system |
| الوصف: | Elastic neutron scattering on a single crystal combined with powder x-ray diffraction measurements were carried out to investigate how the crystal structure evolves as a function of temperature in the Weyl semimetal $\mathrm{W}{\mathrm{Te}}_{2}$. A sharp transition from the low-temperature orthorhombic phase (${T}_{d}$) to the high-temperature monoclinic phase ($1{T}^{\ensuremath{'}}$) was observed at ambient pressure in the single crystal near $\ensuremath{\sim}565$ K. Unlike in ${\mathrm{MoTe}}_{2}$, the solid-solid transition from ${T}_{d}$ to $1{T}^{\ensuremath{'}}$ occurs without the cell doubling of the intermediate ${T}_{d}^{*}$ phase with AABB (or ABBA) layer stacking. In powders, however, the thermal transition from the ${T}_{d}$ to the $1{T}^{\ensuremath{'}}$ phase was broadened and a two-phase coexistence was observed until 700 K, well above the structural transition. |
| تدمد: | 2469-9969 2469-9950 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::dc64fa2b7b023ccaa4fe2eb39e494980 https://doi.org/10.1103/physrevb.102.060103 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........dc64fa2b7b023ccaa4fe2eb39e494980 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24699969 24699950 |
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