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Title: van der Waals Stacking-Induced Topological Phase Transition in Layered Ternary Transition Metal Chalcogenides

Journal Article · · Nano Letters
 [1];  [2];  [3];  [1]; ORCiD logo [2]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Texas A & M Univ., College Station, TX (United States)
  3. Chinese Academy of Sciences (CAS), Beijing (China)

Innovative materials with nontrivial electronic and photonic band topology are crucial for realizing novel devices with low power consumption and heat dissipation and quantum computing free of decoherence. In this work, we theoretically predict a novel class of ternary transition metal chalcogenides that exhibit dual topological characteristics, quantum spin Hall insulators (QSHIs) in their two-dimensional (2D) monolayers and topological Weyl semimetals in their 3D noncentrosymmetric crystals upon van der Waals (vdW) stacking. Remarkably, we find that one can create and annihilate Weyl fermions and realize the transition between Type-I and Type-II Weyl fermions by tuning vdW interlayer spacing, providing the missing physical picture of the evolution from 2D QSHIs to 3D Weyl semimetals. Our findings also show that these materials possess excellent thermodynamic stability and weak interlayer binding; some of them were synthesized two decades ago, implying their great potentials for experimental synthesis, characterization, and vdW heterostacking. Moreover, their ternary nature will offer more tunability for electronic structure by controlling different stoichiometry and valence charges. These results provide an ideal materials platform for realizing QSH effect and exploring fundamental topological phase transition and will open up a variety of new opportunities for two-dimensional materials and topological materials research.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF)
Grant/Contract Number:
SC0010526
OSTI ID:
1534783
Journal Information:
Nano Letters, Vol. 17, Issue 1; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 54 works
Citation information provided by
Web of Science

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High throughput screening for two-dimensional topological insulators journal September 2018
Structural and quantum-state phase transitions in van der Waals layered materials journal July 2017
Two-dimensional multiferroics in monolayer group IV monochalcogenides journal January 2017
Recent advances in ternary two-dimensional materials: synthesis, properties and applications journal January 2017
Nonsaturating Magnetoresistance and Nontrivial Band Topology of Type‐II Weyl Semimetal NbIrTe 4 journal July 2019
A First‐Principles Study of Electronic Properties of Twisted MoTe 2 journal September 2019
Sulfide cluster vacancies inducing an electrochemical reversibility improvement of titanium disulfide electrode material journal January 2020
Direct transition of a HfGeTe 4 ternary transition-metal chalcogenide monolayer with a zigzag van der Waals gap journal April 2018
High-throughput screening and classification of layered di-metal chalcogenides journal January 2019
Experimental progress on layered topological semimetals journal April 2019
A new phase of the two-dimensional ReS 2 sheet with tunable magnetism journal January 2018
Direct transition of a HfGeTe4 ternary transition-metal chalcogenide monolayer with a zigzag van der Waals gap text January 2018
Phonon-Induced Topological Transition to a Type-II Weyl Semimetal text January 2017
Experimental Progress on Layered Topological Semimetals text January 2019
Nonsaturating magnetoresistance and nontrivial band topology of type-II Weyl semimetal NbIrTe4 text January 2019