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Title: Stacking-dependent interlayer coupling in trilayer MoS2 with broken inversion symmetry

Journal Article · · Nano Letters
 [1];  [1];  [1];  [2];  [1];  [1];  [1];  [3];  [4];  [1]
  1. Nanyang Technological Univ. (Singapore)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Chinese Academy of Sciences, Changchun (People's Republic of China)
  4. Academia Sinica, Taipei (Taiwan)

The stacking configuration in few-layer two-dimensional (2D) materials results in different structural symmetries and layer-to-layer interactions, and hence it provides a very useful parameter for tuning their electronic properties. For example, ABA-stacking trilayer graphene remains semimetallic similar to that of monolayer, while ABC-stacking is predicted to be a tunable band gap semiconductor under an external electric field. Such stacking dependence resulting from many-body interactions has recently been the focus of intense research activities. Here we demonstrate that few-layer MoS2 samples grown by chemical vapor deposition with different stacking configurations (AA, AB for bilayer; AAB, ABB, ABA, AAA for trilayer) exhibit distinct coupling phenomena in both photoluminescence and Raman spectra. By means of ultralow-frequency (ULF) Raman spectroscopy, we demonstrate that the evolution of interlayer interaction with various stacking configurations correlates strongly with layer-breathing mode (LBM) vibrations. Our ab initio calculations reveal that the layer-dependent properties arise from both the spin–orbit coupling (SOC) and interlayer coupling in different structural symmetries. Lastly, such detailed understanding provides useful guidance for future spintronics fabrication using various stacked few-layer MoS2 blocks.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1265956
Journal Information:
Nano Letters, Vol. 15, Issue 12; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 113 works
Citation information provided by
Web of Science

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Cited By (36)

Atomic structure of defects and dopants in 2D layered transition metal dichalcogenides journal January 2018
Atomic structural catalogue of defects and vertical stacking in 2H/3R mixed polytype multilayer WS 2 pyramids journal January 2019
Differentiating Polymorphs in Molybdenum Disulfide via Electron Microscopy journal August 2018
Anomalous lattice vibrations of CVD-grown monolayer MoS 2 probed using linear polarized excitation light journal January 2019
Spotting the differences in two-dimensional materials – the Raman scattering perspective journal January 2018
Stacking-dependent interlayer phonons in 3R and 2H MoS 2 journal February 2019
Rashba splitting in bilayer transition metal dichalcogenides controlled by electronic ferroelectricity journal October 2019
Band-edges and band-gap in few-layered transition metal dichalcogenides journal May 2018
Controlled Vapor Growth and Nonlinear Optical Applications of Large-Area 3R Phase WS 2 and WSe 2 Atomic Layers journal January 2019
Step-like band alignment and stacking-dependent band splitting in trilayer TMD heterostructures journal January 2018
Dimensionality of excitons in stacked van der Waals materials: The example of hexagonal boron nitride journal June 2018
Healing of Planar Defects in 2D Materials via Grain Boundary Sliding journal February 2019
Stacking change in MoS2 bilayers induced by interstitial Mo impurities journal February 2018
Thickness and Stacking Sequence Determination of Exfoliated Dichalcogenides (1T-TaS 2 , 2H-MoS 2 ) Using Scanning Transmission Electron Microscopy journal August 2018
Dependence of Raman and absorption spectra of stacked bilayer MoS_2 on the stacking orientation journal January 2016
Analyzing the microstructure and related properties of 2D materials by transmission electron microscopy journal November 2019
Davydov splitting and polytypism in few-layer MoS 2 journal October 2018
Atomic‐Scale Fabrication of In‐Plane Heterojunctions of Few‐Layer MoS 2 via In Situ Scanning Transmission Electron Microscopy journal December 2019
Giant Valley Coherence at Room Temperature in 3R WS 2 with Broken Inversion Symmetry journal October 2019
Hybrid Three-Dimensional Spiral WSe 2 Plasmonic Structures for Highly Efficient Second-Order Nonlinear Parametric Processes journal December 2018
Stacking-controllable interlayer coupling and symmetric configuration of multilayered MoS2 journal February 2018
Facile Synthesis of Single Crystal PtSe 2 Nanosheets for Nanoscale Electronics journal October 2016
Temperature-dependent layer breathing modes in two-dimensional materials journal April 2018
Intrinsic Van Der Waals Magnetic Materials from Bulk to the 2D Limit: New Frontiers of Spintronics journal May 2019
Signature of Hanle precession in trilayer MoS 2 : Theory and experiment journal May 2017
Orientation dependent interlayer stacking structure in bilayer MoS 2 domains journal January 2017
Direct bilayer growth: a new growth principle for a novel WSe 2 homo-junction and bilayer WSe 2 growth journal January 2020
Photoluminescence Quenching and SERS in Tri-layer MoS2 Flakes journal June 2019
Interlayer coupling in two-dimensional semiconductor materials journal August 2018
Structural stability and magnetic-exchange coupling in Mn-doped monolayer/bilayer MoS 2 journal January 2018
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Effect of layer and stacking sequence in simultaneously grown 2H and 3R WS 2 atomic layers journal June 2019
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Dimensionality of excitons in stacked van der Waals materials: The example of hexagonal boron nitride text January 2018
Robust Sample Preparation of Large-Area In- and Out-of-Plane Cross Sections of Layered Materials with Ultramicrotomy journal March 2020
Multiple Grammars and the Logic of Learnability in Second Language Acquisition journal February 2016

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