Theory of strain in single-layer transition metal dichalcogenides

Abstract

Strain engineering has emerged as a powerful tool to modify the optical and electronic properties of two-dimensional crystals. Here we perform a systematic study of strained semiconducting transition metal dichalcogenides. The effect of strain is considered within a full Slater-Koster tight-binding model, which provides us with the band structure in the whole Brillouin zone. From this, we derive an effective low-energy model valid around the K point of the BZ, which includes terms up to second order in momentum and strain. For a generic profile of strain, we show that the solutions for this model can be expressed in terms of the harmonic oscillator and double quantum well models, for the valence and conduction bands respectively. We further study the shift of the position of the electron and hole band edges due to uniform strain. Finally, we discuss the importance of spin-strain coupling in these 2D semiconducting materials.

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Cited by in corpus (80)

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• Theory of 2D crystals: graphene and beyond
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• Atomically inspired $k\cdot p$ approach and valley Zeeman effect in transition metal dichalcogenide monolayers
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• Strain dependence of photoluminescence and circular dichroism in transition metal dichalcogenides: a k.p analysis
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• Plasmonic physics of 2D crystalline materials
• Acoustogalvanic effect in Dirac and Weyl semimetals
• Theory of Strain-Induced Confinement in Transition Metal Dichalcogenide Monolayers
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• Exciton fine structure splitting and linearly polarized emission in strained transition-metal dichalcogenide monolayers
• Tunable optical nonlinearity for TMD polaritons dressed by a Fermi sea
• Flat-band plasmons in twisted bilayer transition metal dichalcogenides
• Exciton routing in the heterostructure of TMD and paraelectrics
• Enhanced Spin-Flip Scattering by Surface Roughness in WS${}_2$ and MoS${}_2$ Armchair Nanoribbons
• Self-organised quantum dots in marginally twisted MoSe${}_2$/WSe${}_2$ and MoS${}_2$/WS${}_2$ bilayers
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• Hall viscosity for optical phonons
• Strain induced topological phase transition at zigzag edges of monolayer transition-metal dichalcogenides
• Layer and orbital interference effects in photoemission from transition metal dichalcogenides
• Optical properties of exciton in two-dimensional transition metal dichalcogenide nanobubbles
• Strain-driven chiral phonons in two-dimensional hexagonal materials
• Twist versus heterostrain control of optical properties of moiré exciton minibands
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• Spin-orbit-stable type-II nodal line band crossing in n-doped monolayer MoX2 (X=S,Se,Te)
• Tuning flat bands by interlayer interaction, spin-orbital coupling, and external fields in twisted homotrilayer MoS${}_2$
• Third-order Optical Nonlinearity in Two-dimensional Transition Metal Dichalcogenides
• Effects of Structural Distortions on the Electronic Structure of T-type Transition Metal Dichalcogenides
• Impact of novel electron-phonon coupling mechanisms on valley physics in two-dimensional materials
• Geometric band properties in strained monolayer transition metal dichalcogenides using simple band structures
• Scanning gate microscopy mapping of edge current and branched electron flow in a transition metal dichalcogenide nanoribbon and quantum point contact
• Strain-dependent resistance and giant gauge factor in monolayer WSe2
• Effect of one-dimensional superlattice potentials on the band gap of two-dimensional materials
• Stability of edge magnetism against disorder in zigzag MoS${}_2$ nanoribbons
• Coherent spin dynamics of excitons in strained monolayer semiconductors
• Elastic Screening of Pseudogauge Fields in Graphene
• Valley transport driven by dynamic lattice distortion
• Single photon emitters with polarization and orbital angular momentum locking in monolayer semiconductors
• Theory of the Strain-Induced Magnetoelectric Effect in Planar Dirac Systems
• New supercurrent pattern in quantum point contact with strained graphene nanoribbon
• SQUID pattern disruption in transition metal dichalcogenide Josephson junctions due to non-parabolic dispersion of the edge states
• Comparative Analysis of Tight-Binding models for Transition Metal Dichalcogenides
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• Review of the tight-binding method applicable to the properties of moiré superlattices
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• Phase Transition and Field Effect Topological Quantum Transistor made of monolayer MoS2
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• Effects of Strain-Induced Pseudogauge Fields on Exciton Dispersion, Transport, and Interactions in Transition Metal Dichalcogenides Nanoribbons
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