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Title: Emergence of topologically protected states in the MoTe 2 Weyl semimetal with layer-stacking order

Abstract

Electronic tunability in crystals with weakly bound layers can be achieved through layer stacking order. One such example is MoTe2, where the low-temperature orthorhombic Td phase is topological and host to Weyl quasiparticles. The transition mechanism to the nontrivial topology is elucidated by single-crystal neutron diffraction. Upon cooling from the monoclinic 1T' to the Td phase, diffuse scattering accompanies the transition, arising from random, in-plane layer displacements, and dissipates upon entering the Td phase. Here, diffuse scattering is observed only in the H0L plane due to irreversible layer shifts along the c axis that break the centrosymmetry of the monoclinic lattice.

Authors:
 [1];  [1];  [2];  [3]; ORCiD logo [4];  [1]
  1. Univ. of Virginia, Charlottesville, VA (United States)
  2. Univ. of Virginia, Charlottesville, VA (United States); Central Michigan Univ., Mount Pleasant, MI (United States)
  3. Ames Lab., Ames, IA (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1559585
Alternate Identifier(s):
OSTI ID: 1505662
Grant/Contract Number:  
AC05-00OR22725; FG02-01ER45927
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 99; Journal Issue: 16; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Schneeloch, John A., Duan, Chunruo, Yang, Junjie, Liu, Jun, Wang, Xiaoping, and Louca, Despina. Emergence of topologically protected states in the MoTe2 Weyl semimetal with layer-stacking order. United States: N. p., 2019. Web. doi:10.1103/PhysRevB.99.161105.
Schneeloch, John A., Duan, Chunruo, Yang, Junjie, Liu, Jun, Wang, Xiaoping, & Louca, Despina. Emergence of topologically protected states in the MoTe2 Weyl semimetal with layer-stacking order. United States. https://doi.org/10.1103/PhysRevB.99.161105
Schneeloch, John A., Duan, Chunruo, Yang, Junjie, Liu, Jun, Wang, Xiaoping, and Louca, Despina. Mon . "Emergence of topologically protected states in the MoTe2 Weyl semimetal with layer-stacking order". United States. https://doi.org/10.1103/PhysRevB.99.161105. https://www.osti.gov/servlets/purl/1559585.
@article{osti_1559585,
title = {Emergence of topologically protected states in the MoTe2 Weyl semimetal with layer-stacking order},
author = {Schneeloch, John A. and Duan, Chunruo and Yang, Junjie and Liu, Jun and Wang, Xiaoping and Louca, Despina},
abstractNote = {Electronic tunability in crystals with weakly bound layers can be achieved through layer stacking order. One such example is MoTe2, where the low-temperature orthorhombic Td phase is topological and host to Weyl quasiparticles. The transition mechanism to the nontrivial topology is elucidated by single-crystal neutron diffraction. Upon cooling from the monoclinic 1T' to the Td phase, diffuse scattering accompanies the transition, arising from random, in-plane layer displacements, and dissipates upon entering the Td phase. Here, diffuse scattering is observed only in the H0L plane due to irreversible layer shifts along the c axis that break the centrosymmetry of the monoclinic lattice.},
doi = {10.1103/PhysRevB.99.161105},
journal = {Physical Review B},
number = 16,
volume = 99,
place = {United States},
year = {Mon Apr 08 00:00:00 EDT 2019},
month = {Mon Apr 08 00:00:00 EDT 2019}
}

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Cited by: 9 works
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Works referencing / citing this record:

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