Quasiparticle band gaps, excitonic effects, and anisotropic optical properties of the monolayer distorted<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>1</mml:mn><mml:mi>T</mml:mi></mml:mrow></mml:math>diamond-chain structures<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mtext>ReS</mml:mtext><mml:mn>2</mml:mn></mml:msub></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mtext>ReSe</mml:mtext><mml:mn>2</mml:mn></mml:msu

Zhong, Hongxia; Gao, Shiyuan; Shi, Junjie; Yang, Li

doi:10.1103/physrevb.92.115438

Cited by 140 publications

(101 citation statements)

References 47 publications

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“…1c). The absorption peaks, labeled as X 1 and X 2 , arise from the two lowest, energetically nondegenerate direct exciton states near Γ point27 and show strong polarization dependence as reported by Aslan et al 28. Corresponding θ -dependent Lorentzian spectral weights clearly reveal their linear nature (Fig.…”

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confidence: 60%

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Selectively tunable optical Stark effect of anisotropic excitons in atomically thin ReS2

et al. 2016

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The optical Stark effect is a coherent light–matter interaction describing the modification of quantum states by non-resonant light illumination in atoms, solids and nanostructures. Researchers have strived to utilize this effect to control exciton states, aiming to realize ultra-high-speed optical switches and modulators. However, most studies have focused on the optical Stark effect of only the lowest exciton state due to lack of energy selectivity, resulting in low degree-of-freedom devices. Here, by applying a linearly polarized laser pulse to few-layer ReS2, where reduced symmetry leads to strong in-plane anisotropy of excitons, we control the optical Stark shift of two energetically separated exciton states. Especially, we selectively tune the Stark effect of an individual state with varying light polarization. This is possible because each state has a completely distinct dependence on light polarization due to different excitonic transition dipole moments. Our finding provides a methodology for energy-selective control of exciton states.

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confidence: 60%

“…ReS 2 is a member of a recently emerged family of group VII 2D TMDs2223242526272829. Unlike molybdenum and tungsten dichalcogenides, group VI TMDs with hexagonal structure, ReS 2 exhibits reduced in-plane crystal symmetry with a distorted 1T structure forming Re atom chains (bluish green dots in Fig.…”

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confidence: 99%

Selectively tunable optical Stark effect of anisotropic excitons in atomically thin ReS2

et al. 2016

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“…As a result, ReS2 is active in capturing photons within near-infrared frequency regimes and is therefore expected to be useful for optoelectronic applications. [73] Apart from abosrption anisotropy, photolumenscence (PL) emission spectra show significant difference with that of conventional TMDs. For group VI TMDs, the emission 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 intensity is increased in monlayer by an order of magnitude compared with the bulk due to crossover from indirect to direct band gap transition.…”

Section: Excitonic and Absorption Propertiesmentioning

confidence: 99%

Advent of 2D Rhenium Disulfide (ReS₂): Fundamentals to Applications

Rahman

Davey

Qiao

2017

Adv Funct Materials

324

279

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Rhenium disulfide (ReS2) is a two dimensional (2D) group VII transition metal dichalcogenide (TMD). It is attributed with structural and vibrational anisotropy, layer independent electrical and optical properties, and metal-free magnetism properties. These properties are unusual compared with more widely used group VI-TMDs e.g. MoS2, MoSe2, WS2 and WSe2. Consequently, it has attracted significant interest in recent years and is now being used for a variety of applications including solid state electronics, catalysis, and, energy harvesting and energy storage. It is anticipated that ReS2 has the potential to be equally used in parallel with isotropic TMDs from group VI for all known applications and beyond.Therefore, a review on ReS2 is very timely. In this first review on ReS2, we critically analyze the available synthesis procedures and their pros-cons, atomic structure and lattice symmetry, crystal structure and growth mechanisms with an insight to the orientation and architecture of domain and grain boundaries, decoupling of structural and vibrational properties, anisotropic electrical, optical and magnetic properties impacted by crystal imperfections, doping and adatoms adsorptions, and the contemporary applications in different areas.

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“…Thus, the Re-TMDs promise a new means to control SO effects in few-layer semiconductor heterostructures. Being highly anisotropic 2D materials, they also offer new possibilities as hyperbolic plasmonic materials 16 or polarisation-sensitive photodetectors 17,18,19,20 . Interest in anisotropic 2D materials is growing rapidly, with the isolation of few-layer black phosphorus and analogues such as GeS; relative to these materials, however, we find ReS2 and ReSe2 are more promising because they are stable in air 21 .…”

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Electronic bandstructure and van der Waals coupling of ReSe2 revealed by high-resolution angle-resolved photoemission spectroscopy

Hart

Webb

Dale

et al. 2017

Sci Rep

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ReSe2 and ReS2 are unusual compounds amongst the layered transition metal dichalcogenides as a result of their low symmetry, with a characteristic in-plane anisotropy due to in-plane rhenium ‘chains’. They preserve inversion symmetry independent of the number of layers and, in contrast to more well-known transition metal dichalcogenides, bulk and few-monolayer Re-TMD compounds have been proposed to behave as electronically and vibrational decoupled layers. Here, we probe for the first time the electronic band structure of bulk ReSe2 by direct nanoscale angle-resolved photoemission spectroscopy. We find a highly anisotropic in- and out-of-plane electronic structure, with the valence band maxima located away from any particular high-symmetry direction. The effective mass doubles its value perpendicular to the Re chains and the interlayer van der Waals coupling generates significant electronic dispersion normal to the layers. Our density functional theory calculations, including spin-orbit effects, are in excellent agreement with these experimental findings.

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Quasiparticle band gaps, excitonic effects, and anisotropic optical properties of the monolayer distorted1Tdiamond-chain structuresReS2andReSe2

Cited by 140 publications

References 47 publications

Selectively tunable optical Stark effect of anisotropic excitons in atomically thin ReS2

Selectively tunable optical Stark effect of anisotropic excitons in atomically thin ReS2

Advent of 2D Rhenium Disulfide (ReS₂): Fundamentals to Applications

Electronic bandstructure and van der Waals coupling of ReSe2 revealed by high-resolution angle-resolved photoemission spectroscopy

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Quasiparticle band gaps, excitonic effects, and anisotropic optical properties of the monolayer distorted1Tdiamond-chain structuresReS2andReSe2

Cited by 140 publications

References 47 publications

Selectively tunable optical Stark effect of anisotropic excitons in atomically thin ReS2

Selectively tunable optical Stark effect of anisotropic excitons in atomically thin ReS2

Advent of 2D Rhenium Disulfide (ReS2): Fundamentals to Applications

Electronic bandstructure and van der Waals coupling of ReSe2 revealed by high-resolution angle-resolved photoemission spectroscopy

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Advent of 2D Rhenium Disulfide (ReS₂): Fundamentals to Applications