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Title: Pressure-induced Td to 1T' structural phase transition in WTe2

Abstract

WTe2 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 WTe2. 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 P21/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];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [3];  [3];  [3];  [4];  [5];  [5]
+ Show Author Affiliations
  1. Chinese Academy of Sciences, Hefei (China)
  2. Center for High Pressure Science and Technology Advanced Research, Shanghai (China)
  3. Nanjing Univ., Nanjing (China)
  4. Center for High Pressure Science and Technology Advanced Research, Shanghai (China); Carnegie Inst. of Washington, Argonne, IL (United States)
  5. Chinese Academy of Sciences, Hefei (China); Nanjing Univ., Nanjing (China)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1267459
Grant/Contract Number:  
NA0001974; FG02-99ER45775; AC02-06CH11357; FG02-94ER14466
Resource Type:
Accepted Manuscript
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 6; Journal Issue: 7; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
ENGLISH
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Zhou, Yonghui, Chen, Xuliang, Li, Nana, Zhang, Ranran, Wang, Xuefei, An, Chao, Zhou, Ying, Pan, Xingchen, Song, Fengqi, Wang, Baigeng, Yang, Wenge, Yang, Zhaorong, and Zhang, Yuheng. Pressure-induced Td to 1T' structural phase transition in WTe2. United States: N. p., 2016. Web. doi:10.1063/1.4959026.
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Zhou, Yonghui, Chen, Xuliang, Li, Nana, Zhang, Ranran, Wang, Xuefei, An, Chao, Zhou, Ying, Pan, Xingchen, Song, Fengqi, Wang, Baigeng, Yang, Wenge, Yang, Zhaorong, & Zhang, Yuheng. Pressure-induced Td to 1T' structural phase transition in WTe2. United States. https://doi.org/10.1063/1.4959026
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Zhou, Yonghui, Chen, Xuliang, Li, Nana, Zhang, Ranran, Wang, Xuefei, An, Chao, Zhou, Ying, Pan, Xingchen, Song, Fengqi, Wang, Baigeng, Yang, Wenge, Yang, Zhaorong, and Zhang, Yuheng. Wed . "Pressure-induced Td to 1T' structural phase transition in WTe2". United States. https://doi.org/10.1063/1.4959026. https://www.osti.gov/servlets/purl/1267459.
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@article{osti_1267459,
title = {Pressure-induced Td to 1T' structural phase transition in WTe2},
author = {Zhou, Yonghui and Chen, Xuliang and Li, Nana and Zhang, Ranran and Wang, Xuefei and An, Chao and Zhou, Ying and Pan, Xingchen and Song, Fengqi and Wang, Baigeng and Yang, Wenge and Yang, Zhaorong and Zhang, Yuheng},
abstractNote = {WTe2 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 WTe2. 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 P21/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},
number = 7,
volume = 6,
place = {United States},
year = {Wed Jul 13 00:00:00 EDT 2016},
month = {Wed Jul 13 00:00:00 EDT 2016}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1063/1.4959026
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Cited by: 9 works
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Figures / Tables:

FIG. 1 FIG. 1: Synchrotron X-ray diffraction patterns of WTe2 during the compression (denoted by c) and decompression (by d) runs ($λ$= 0.4246 Å). Numbers represent pressures in unit of GPa. Arrows indicate anomalies which appear at the phase evolution. The patterns shown in blue correspond to the mixed phase region. Themore » observed and Rietveld refined profiles at 0.9 and 28.8 GPa are shown for the $T$$d$ ($Pnm$21, No. 31) and 1$T′$ ($P$21/$m$, No. 11) phases. The open circles and red lines are the experimental and calculated data. The positions of the Bragg reflections are marked by vertical sticks. The refined values are $R$P= 2.00%, weighted profile $R$WP= 1.49% at 0.9 GPa and $R$P= 0.77%, weighted profile $R$WP= 0.97% at 28.8 GPa, respectively.« less
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Works referenced in this record:

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    Works referencing / citing this record:

    In-Plane Anisotropic Thermal Conductivity of Few-Layered Transition Metal Dichalcogenide Td-WTe 2
    journal, December 2018

    Phase‐Tunable Synthesis of Ultrathin Layered Tetragonal CoSe and Nonlayered Hexagonal CoSe Nanoplates
    journal, April 2019

    Phase Transition and Superconductivity Enhancement in Se‐Substituted MoTe 2 Thin Films
    journal, October 2019

    Electronic and Optoelectronic Applications Based on 2D Novel Anisotropic Transition Metal Dichalcogenides
    journal, October 2017

    Nonlinear magnetotransport shaped by Fermi surface topology and convexity
    journal, March 2019

    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
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      Figures / Tables found in this record:

      FIG. 1 (p. 4)figure
      FIG. 2 (p. 5)figure
      FIG. 3 (p. 6)figure
      FIG. 4 (p. 7)figure
      FIG. 5 (p. 7)figure
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