skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Pressure-induced Td to 1T′ structural phase transition in WTe{sub 2}

Abstract

WTe{sub 2} is provoking immense interest owing to its extraordinary properties, such as large positive magnetoresistance, pressure-driven superconductivity and possible type-II Weyl semimetal state. Here we report results of high-pressure synchrotron X-ray diffraction (XRD), Raman and electrical transport measurements on WTe{sub 2}. Both the XRD and Raman results reveal a structural transition upon compression, starting at 6.0 GPa and completing above 15.5 GPa. We have determined that the high-pressure lattice symmetry is monoclinic 1T′ with space group of P2{sub 1}/m. This transition is related to a lateral sliding of adjacent Te-W-Te layers and results in a collapse of the unit cell volume by ∼20.5%. The structural transition also casts a pressure range with the broadened superconducting transition, where the zero resistance disappears.

Authors:
 [1]; ; ; ; ;  [1];  [2];  [3]; ;  [3];  [2];  [1];  [1]
  1. High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031 (China)
  2. Center for High Pressure Science and Technology Advanced Research, Shanghai 201203 (China)
  3. National Laboratory of Solid State Microstructures, College of Physics, Nanjing University, Nanjing 210093 (China)
Publication Date:
OSTI Identifier:
22611471
Resource Type:
Journal Article
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 6; Journal Issue: 7; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2158-3226
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPRESSION; LAYERS; MAGNETORESISTANCE; MONOCLINIC LATTICES; PHASE TRANSFORMATIONS; PRESSURE RANGE GIGA PA; SEMIMETALS; SPACE GROUPS; SUPERCONDUCTIVITY; SYNCHROTRON RADIATION; TUNGSTEN TELLURIDES; X-RAY DIFFRACTION

Citation Formats

Zhou, Yonghui, Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, Chen, Xuliang, Zhang, Ranran, Wang, Xuefei, An, Chao, Zhou, Ying, Li, Nana, Pan, Xingchen, Song, Fengqi, Wang, Baigeng, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, Yang, Wenge, High Pressure Synergetic Consortium, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, IL 60439, Yang, Zhaorong, Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, Zhang, Yuheng, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093. Pressure-induced Td to 1T′ structural phase transition in WTe{sub 2}. United States: N. p., 2016. Web. doi:10.1063/1.4959026.
Zhou, Yonghui, Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, Chen, Xuliang, Zhang, Ranran, Wang, Xuefei, An, Chao, Zhou, Ying, Li, Nana, Pan, Xingchen, Song, Fengqi, Wang, Baigeng, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, Yang, Wenge, High Pressure Synergetic Consortium, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, IL 60439, Yang, Zhaorong, Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, Zhang, Yuheng, & Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093. Pressure-induced Td to 1T′ structural phase transition in WTe{sub 2}. United States. doi:10.1063/1.4959026.
Zhou, Yonghui, Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, Chen, Xuliang, Zhang, Ranran, Wang, Xuefei, An, Chao, Zhou, Ying, Li, Nana, Pan, Xingchen, Song, Fengqi, Wang, Baigeng, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, Yang, Wenge, High Pressure Synergetic Consortium, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, IL 60439, Yang, Zhaorong, Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, Zhang, Yuheng, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093. Fri . "Pressure-induced Td to 1T′ structural phase transition in WTe{sub 2}". United States. doi:10.1063/1.4959026.
@article{osti_22611471,
title = {Pressure-induced Td to 1T′ structural phase transition in WTe{sub 2}},
author = {Zhou, Yonghui and Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 and Chen, Xuliang and Zhang, Ranran and Wang, Xuefei and An, Chao and Zhou, Ying and Li, Nana and Pan, Xingchen and Song, Fengqi and Wang, Baigeng and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093 and Yang, Wenge and High Pressure Synergetic Consortium, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, IL 60439 and Yang, Zhaorong and Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093 and Zhang, Yuheng and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093},
abstractNote = {WTe{sub 2} is provoking immense interest owing to its extraordinary properties, such as large positive magnetoresistance, pressure-driven superconductivity and possible type-II Weyl semimetal state. Here we report results of high-pressure synchrotron X-ray diffraction (XRD), Raman and electrical transport measurements on WTe{sub 2}. Both the XRD and Raman results reveal a structural transition upon compression, starting at 6.0 GPa and completing above 15.5 GPa. We have determined that the high-pressure lattice symmetry is monoclinic 1T′ with space group of P2{sub 1}/m. This transition is related to a lateral sliding of adjacent Te-W-Te layers and results in a collapse of the unit cell volume by ∼20.5%. The structural transition also casts a pressure range with the broadened superconducting transition, where the zero resistance disappears.},
doi = {10.1063/1.4959026},
journal = {AIP Advances},
issn = {2158-3226},
number = 7,
volume = 6,
place = {United States},
year = {2016},
month = {7}
}

Works referencing / citing this record:

Observation of superconductivity in pressurized 2M WSe 2 crystals
journal, January 2019

  • Fang, Yuqiang; Dong, Qing; Pan, Jie
  • Journal of Materials Chemistry C, Vol. 7, Issue 28
  • DOI: 10.1039/c9tc02417d