Van der Waals Stacking Induced Topological Phase Transition in Layered Ternary Transition Metal Chalcogenides

Abstract

Novel 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. Here using first-principles approach, we predict a class of ternary transition metal chalcogenides (TTMC) MM'Te${}_4$ exhibits dual topological characteristics: quantum spin Hall (QSH) insulators in their 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. Our calculations show that they possess excellent thermodynamic stability and weak interlayer binding, implying their great potentials for experimental synthesis, direct exfoliation and vdW heterostacking. Moreover, their ternary nature will offer more tunability for electronic structure by controlling different stoichiometry and valence charges. Our findings provide an ideal materials platform for realizing QSH effect and exploring topological phase transition, and will open up a variety of new opportunities for two-dimensional materials and topological materials research.

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Cited by in corpus (27)

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• Bulk Fermi-surface of the Weyl type-II semi-metallic candidate MoTe2
• Coexistence of Tunable Weyl Points and Topological Nodal Lines in Ternary Transition-Metal Telluride TaIrTe4
• Observation of the dual quantum spin Hall insulator by density-tuned correlations in a van der Waals monolayer
• Experimental Progress on Layered Topological Semimetals
• Quantum spin Hall effect in monolayer and bilayer TaIrTe${}_4$
• Bulk Fermi surface of the type-II Weyl semimetal candidate NbIrTe${}_4$
• Observation of superconductivity in pressurized Weyl semimetal candidate TaIrTe4
• Nonsaturating magnetoresistance and nontrivial band topology of type-II Weyl semimetal NbIrTe4
• Low-symmetry topological materials for large charge-to-spin interconversion: The case of transition metal dichalcogenide monolayers
• Phonon-Induced Topological Transition to a Type-II Weyl Semimetal
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• Anisotropic transport and de Haas$-$van Alphen oscillations in quasi-one-dimensional TaPtTe${}_5$
• Layered van der Waals topological metals of TaTMTe4 (TM = Ir, Rh, Ru) family
• Robust Dirac lines against Ge vacancy and possible spin-orbit Dirac points in nonsymmorphic HfGe0.92Te
• Two-Dimensional Multiferroics: Ferroelasticity, Ferroelectricity, Domain Wall, and Potential Mechano-Opto-Electronic Applications
• Finite-size topological phases from semimetals
• A complementary screening for quantum spin Hall insulators in 2D exfoliable materials
• Non-trivial topology in rare-earth monopnictides from dimensionality reduction
• Programmable, Spontaneous Superlattice Memory in a Monolayer Topological Insulator
• Single Crystal Growth and Transport Properties of van der Waals Materials $AB$Te${}_4$ ($A/B$ = Ti, Zr, Hf)
• Layer dependent topological phases and transitions in TaRhTe${}_4$: From monolayer and bilayer to bulk
• A New Era of Quantum Materials Mastery and Quantum Simulators In and Out of Equilibrium
• Exciton Condensation in Landau Levels of Quantum Spin Hall Insulators
• Field induced hysteretic structural phase switching and possible CDW in Re-doped MoTe${}_2$
• Observation of nearly identical superconducting transition temperatures in pressurized Weyl semimetal MIrTe4 (M=Nb and Ta)