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Title: Topology Hierarchy of Transition Metal Dichalcogenides Built from Quantum Spin Hall Layers

Journal Article · · Advanced Materials
 [1]; ORCiD logo [2];  [3];  [4];  [5];  [6];  [4];  [7];  [7];  [4];  [1];  [1];  [8];  [3];  [1];  [1];  [4];  [9]
  1. Tsinghua Univ., Beijing (China)
  2. Wuhan Univ. (China)
  3. Peking Univ., Beijing (China)
  4. ShanghaiTech Univ. (China). Laboratory for Topological Physics
  5. ShanghaiTech Univ. (China)
  6. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  7. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
  8. Nanjing Univ. (China)
  9. ShanghaiTech Univ. (China). Laboratory for Topological Physics; Univ. of Oxford (United Kingdom). Clarendon Lab.

The evolution of the physical properties of 2D material from monolayer limit to the bulk reveals unique consequences from dimension confinement and provides a distinct tuning knob for applications. Monolayer 1T'-phase transition metal dichalcogenides (1T'-TMDs) with ubiquitous quantum spin Hall (QSH) states are ideal 2D building blocks of various 3D topological phases. However, the stacking geometry has been previously limited to the bulk 1T'-WTe2 type. Here, the novel 2M-TMDs consisting of translationally stacked 1T'-monolayers are introduced as promising material platforms with tunable inverted bandgaps and interlayer coupling. By performing advanced polarization-dependent angle-resolved photoemission spectroscopy as well as first-principles calculations on the electronic structure of 2M-TMDs, a topology hierarchy is revealed: 2M-WSe2, MoS2, and MoSe2 are weak topological insulators (WTIs), whereas 2M-WS2 is a strong topological insulator (STI). Further demonstration of topological phase transitions by tunning interlayer distance indicates that band inversion amplitude and interlayer coupling jointly determine different topological states in 2M-TMDs. Finally, it is proposed that 2M-TMDs are parent compounds of various exotic phases including topological superconductors and promise great application potentials in quantum electronics due to their flexibility in patterning with 2D materials.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); National Key Research and Development Program of China; Science and Technology Commission of Shanghai Municipality (STCSM); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-76SF00515; AC02-05CH11231
OSTI ID:
1998170
Alternate ID(s):
OSTI ID: 2228870
Journal Information:
Advanced Materials, Vol. 35, Issue 21; ISSN 0935-9648
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (65)

Epitaxial Growth of Quasi-One-Dimensional Bismuth-Halide Chains with Atomically Sharp Topological Non-Trivial Edge States journal August 2021
Generalized Gradient Approximation Made Simple journal October 1996
Gate‐Tunable Electrical Transport in Thin 2M‐WS 2 Flakes journal July 2019
Unconventional superconductivity in magic-angle graphene superlattices journal March 2018
Highly crystalline 2D superconductors journal December 2016
Large, non-saturating magnetoresistance in WTe2 journal September 2014
An updated version of wannier90: A tool for obtaining maximally-localised Wannier functions journal August 2014
Classification of stable three-dimensional Dirac semimetals with nontrivial topology journal September 2014
Observation of Topological Electronic Structure in Quasi-1D Superconductor TaSe3 journal December 2020
Suppression of the superconducting transition temperature in Se-doping 2 M WS2 journal February 2021
Maximally localized generalized Wannier functions for composite energy bands journal November 1997
Higher-Order Topology, Monopole Nodal Lines, and the Origin of Large Fermi Arcs in Transition Metal Dichalcogenides X Te 2 ( X = Mo , W ) journal October 2019
A weak topological insulator state in quasi-one-dimensional bismuth iodide journal February 2019
Topological Axion States in the Magnetic Insulator MnBi 2 Te 4 with the Quantized Magnetoelectric Effect journal May 2019
Large quantum-spin-Hall gap in single-layer 1T′ WSe2 journal May 2018
Evidence of anisotropic Majorana bound states in 2M-WS2 journal July 2019
Evidence for a higher-order topological insulator in a three-dimensional material built from van der Waals stacking of bismuth-halide chains journal January 2021
Topological Phase Transition and Texture Inversion in a Tunable Topological Insulator journal March 2011
Large-Gap Quantum Spin Hall State and Temperature-Induced Lifshitz Transition in Bi4Br4 journal January 2022
The electronic properties of graphene journal January 2009
Intrinsic magnetic topological insulators in van der Waals layered MnBi 2 Te 4 -family materials journal June 2019
Metastable 1T′-phase group VIB transition metal dichalcogenide crystals journal April 2021
A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu journal April 2010
Dynamic band-structure tuning of graphene moiré superlattices with pressure journal May 2018
Observation of topological superconductivity in a stoichiometric transition metal dichalcogenide 2M-WS2 journal May 2021
Colloquium : Excitons in atomically thin transition metal dichalcogenides journal April 2018
Buckled two-dimensional Xene sheets journal January 2017
Discovery of Superconductivity in 2M WS 2 with Possible Topological Surface States journal June 2019
Topological phases in two-dimensional materials: a review journal May 2016
Observation of the quantum spin Hall effect up to 100 kelvin in a monolayer crystal journal January 2018
Type-II Weyl semimetals journal November 2015
The Quantum Spin Hall Effect: Theory and Experiment journal March 2008
Observation of Coexisting Dirac Bands and Moiré Flat Bands in Magic‐Angle Twisted Trilayer Graphene journal September 2022
Evidence of a topological edge state in a superconducting nonsymmorphic nodal-line semimetal journal May 2021
Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2 journal December 2013
Topological insulators with inversion symmetry journal July 2007
Observation and control of the weak topological insulator state in ZrTe5 journal January 2021
Experimental Realization of an Intrinsic Magnetic Topological Insulator * journal June 2019
Irvsp: To obtain irreducible representations of electronic states in the VASP journal April 2021
Terahertz Driven Reversible Topological Phase Transition of Monolayer Transition Metal Dichalcogenides journal April 2021
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
2D transition metal dichalcogenides journal June 2017
Enhanced critical field and anomalous metallic state in two-dimensional centrosymmetric 1TWS2 journal April 2022
Evidence of a room-temperature quantum spin Hall edge state in a higher-order topological insulator journal July 2022
Quantum anomalous Hall effect in intrinsic magnetic topological insulator MnBi 2 Te 4 journal January 2020
Robust axion insulator and Chern insulator phases in a two-dimensional antiferromagnetic topological insulator journal January 2020
Topological Insulators in Three Dimensions journal March 2007
Correlated insulator behaviour at half-filling in magic-angle graphene superlattices journal March 2018
Quantum Spin Hall Effect journal March 2006
Large magnetoresistance in the monoclinic 2M WSe2 journal July 2020
Strongly correlated Chern insulators in magic-angle twisted bilayer graphene journal December 2020
Quantum spin Hall effect in two-dimensional transition metal dichalcogenides journal November 2014
WannierTools: An open-source software package for novel topological materials journal March 2018
Recent Advances in Topological Quantum Materials by Angle-Resolved Photoemission Spectroscopy journal October 2020
Robust superconductivity in magic-angle multilayer graphene family journal July 2022
Visualization of the strain-induced topological phase transition in a quasi-one-dimensional superconductor TaSe3 journal May 2021
Prediction and observation of an antiferromagnetic topological insulator journal December 2019
Observation of topological states residing at step edges of WTe2 journal September 2017
Anisotropic Full-Gap Superconductivity in 2M-WS 2 Topological Metal with Intrinsic Proximity Effect journal December 2020
Magnetic 2D materials and heterostructures journal May 2019
Signature of type-II Weyl semimetal phase in MoTe2 journal January 2017
Intercalation as a versatile tool for fabrication, property tuning, and phase transitions in 2D materials journal March 2021
Maximally localized Wannier functions for entangled energy bands journal December 2001
Quantum spin Hall state in monolayer 1T'-WTe2 journal June 2017
P-type doping in 2M-WS2 for a complete phase diagram journal January 2021