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Valley-selective circular dichroism of monolayer molybdenum disulphide

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms1882· OSTI ID:1623899
 [1];  [2];  [3];  [2];  [2];  [4];  [5];  [3];  [4];  [2];  [4]
  1. Peking Univ., Beijing (China). International Center for Quantum Materials; DOE/OSTI
  2. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Laboratory for Condensed Matter Physics, Institute of Physics
  3. Chinese Academy of Sciences (CAS), Beijing (China). State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors
  4. Peking Univ., Beijing (China). International Center for Quantum Materials
  5. Peking Univ., Beijing (China). International Center for Quantum Materials; Univ. of Texas, Austin, TX (United States). Dept. of Physics
A two-dimensional honeycomb lattice harbours a pair of inequivalent valleys in the k-space electronic structure, in the vicinities of the vertices of a hexagonal Brillouin zone, K±. It is particularly appealing to exploit this emergent degree of freedom of charge carriers, in what is termed ‘valleytronics’. The physics of valleys mimics that of spin, and will make possible devices, analogous to spintronics, such as valley filter and valve, and optoelectronic Hall devices, all very promising for next-generation electronics. The key challenge lies with achieving valley polarization, of which a convincing demonstration in a two-dimensional honeycomb structure remains evasive. Here we show, using first principles calculations, that monolayer molybdenum disulphide is an ideal material for valleytronics, for which valley polarization is achievable via valley-selective circular dichroism arising from its unique symmetry. We also provide experimental evidence by measuring the circularly polarized photoluminescence on monolayer molybdenum disulphide, which shows up to 50% polarization.
Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
National Basic Research Program of China; National Natural Science Foundation of China (NSFC); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; Welch Foundation
Grant/Contract Number:
FG03-02ER45958
OSTI ID:
1623899
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 3; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Valley notch filter in a graphene strain superlattice: Green's function and machine learning approach journal November 2019
Circular dichroism and Faraday and Kerr rotation in two-dimensional materials with intrinsic Hall conductivities journal January 2020
Robust optical emission polarization in MoS 2 monolayers through selective valley excitation journal August 2012
Longitudinal and spin-valley Hall optical conductivity in single layer MoS 2 journal November 2012
Electronic properties of the MoS 2 -WS 2 heterojunction journal February 2013
Indirect exchange interaction between magnetic adatoms in monolayer MoS 2 journal March 2013
Acoustic phonon limited mobility in two-dimensional semiconductors: Deformation potential and piezoelectric scattering in monolayer MoS 2 from first principles journal June 2013
First-principles analysis of MoS 2 /Ti 2 C and MoS 2 /Ti 2 C Y 2 ( Y = F and OH) all-2D semiconductor/metal contacts journal June 2013
Monolayer MoS 2 : Trigonal warping, the Γ valley, and spin-orbit coupling effects journal July 2013
Spintronics in MoS 2 monolayer quantum wires journal August 2013
Tight-binding model and direct-gap/indirect-gap transition in single-layer and multilayer MoS 2 journal August 2013
Three-band tight-binding model for monolayers of group-VIB transition metal dichalcogenides journal August 2013
Effective lattice Hamiltonian for monolayer MoS 2 : Tailoring electronic structure with perpendicular electric and magnetic fields journal August 2013
Spin Hall effect in spin-valley coupled monolayers of transition metal dichalcogenides journal September 2013
Topological Kirchhoff law and bulk-edge correspondence for valley Chern and spin-valley Chern numbers journal October 2013
Effects of lower symmetry and dimensionality on Raman spectra in two-dimensional WSe 2 journal November 2013
Large spin splitting in the conduction band of transition metal dichalcogenide monolayers journal December 2013
Giant valley drifts in uniaxially strained monolayer MoS 2 journal December 2013
Exciton-exciton annihilation in MoSe 2 monolayers journal March 2014
Spin-orbit-coupled quantum wires and Majorana fermions on zigzag edges of monolayer transition-metal dichalcogenides journal April 2014
Valley polarization in magnetically doped single-layer transition-metal dichalcogenides journal April 2014
Valley depolarization due to intervalley and intravalley electron-hole exchange interactions in monolayer MoS 2 journal May 2014
Stability and electronic structures of native defects in single-layer MoS 2 journal May 2014
Second-order resonant Raman scattering in single-layer tungsten disulfide WS 2 journal June 2014
Valley dynamics probed through charged and neutral exciton emission in monolayer WSe 2 journal August 2014
Group theory analysis of phonons in two-dimensional transition metal dichalcogenides journal September 2014
Photoinduced quantum spin and valley Hall effects, and orbital magnetization in monolayer MoS 2 journal September 2014
Transition-metal dichalcogenide bilayers: Switching materials for spintronic and valleytronic applications journal September 2014
Nonlinear photoluminescence in atomically thin layered WSe 2 arising from diffusion-assisted exciton-exciton annihilation journal October 2014
Exciton valley dynamics probed by Kerr rotation in WSe 2 monolayers journal October 2014
Valley- and spin-switch effects in molybdenum disulfide superconducting spin valve journal October 2014
Generation and transport of valley-polarized current in transition-metal dichalcogenides journal November 2014
Measurement of the optical dielectric function of monolayer transition-metal dichalcogenides: MoS 2 , Mo S e 2 , WS 2 , and WS e 2 journal November 2014
Emergence of ferroelectricity and spin-valley properties in two-dimensional honeycomb binary compounds journal April 2015
Transport properties of WSe 2 nanotube heterojunctions: A first-principles study journal May 2015
TiS 3 nanoribbons: Width-independent band gap and strain-tunable electronic properties journal August 2015
Exciton polaritons in transition-metal dichalcogenides and their direct excitation via energy transfer journal August 2015
Giant and tunable valley degeneracy splitting in MoTe 2 journal September 2015
Valley Hall effect in disordered monolayer MoS 2 from first principles journal September 2015
Hole spin relaxation in bilayer WSe 2 journal October 2015
Ab initio tight-binding Hamiltonian for transition metal dichalcogenides journal November 2015
Quantum magnetotransport properties of a MoS 2 monolayer journal January 2016
Spin- and valley-polarized transport across line defects in monolayer MoS 2 journal January 2016
Valley physics in tin (II) sulfide journal January 2016
Splitting between bright and dark excitons in transition metal dichalcogenide monolayers journal March 2016
Magnetoexcitons in large area CVD-grown monolayer MoS 2 and MoSe 2 on sapphire journal April 2016
Single-layer MoS 2 on Au(111): Band gap renormalization and substrate interaction journal April 2016
Screening and many-body effects in two-dimensional crystals: Monolayer MoS 2 journal June 2016
Theory of intervalley Coulomb interactions in monolayer transition-metal dichalcogenides journal August 2016
Infrared to terahertz optical conductivity of n -type and p -type monolayer MoS 2 in the presence of Rashba spin-orbit coupling journal October 2016
Valley trion dynamics in monolayer MoSe 2 journal December 2016
Excitonic Stark effect in MoS 2 monolayers journal December 2016
Electronic structure of the Co ( 0001 ) / Mo S 2 interface and its possible use for electrical spin injection in a single Mo S 2 layer journal February 2017
Robust dual topological character with spin-valley polarization in a monolayer of the Dirac semimetal Na 3 Bi journal February 2017
Robust high-temperature trion emission in monolayers of Mo ( S y Se 1 − y ) 2 alloys journal May 2017
Quantum valley Hall effect and perfect valley filter based on photonic analogs of transitional metal dichalcogenides journal June 2017
Single-layer group IV-V and group V-IV-III-VI semiconductors: Structural stability, electronic structures, optical properties, and photocatalysis journal July 2017
Room-temperature half-metallicity in monolayer honeycomb structures of group-V binary compounds with carrier doping journal August 2017
Charged excitons in monolayer WSe 2 : Experiment and theory journal August 2017
Fine structure and lifetime of dark excitons in transition metal dichalcogenide monolayers journal October 2017
Multiband k · p theory of monolayer X Se ( X = In , Ga ) journal October 2017
Dark excitations in monolayer transition metal dichalcogenides journal November 2017
Symmetry-forbidden intervalley scattering by atomic defects in monolayer transition-metal dichalcogenides journal December 2017
Valleytronics in merging Dirac cones: All-electric-controlled valley filter, valve, and universal reversible logic gate journal December 2017
Theory of optical absorption by interlayer excitons in transition metal dichalcogenide heterobilayers journal January 2018
Large valley splitting in monolayer WS 2 by proximity coupling to an insulating antiferromagnetic substrate journal January 2018
Band nesting, massive Dirac fermions, and valley Landé and Zeeman effects in transition metal dichalcogenides: A tight-binding model journal February 2018
Optical nonlinearities of excitons in monolayer MoS 2 journal April 2018
Valley Edelstein effect in monolayer transition-metal dichalcogenides journal July 2018
Theory of superconductivity in hole-doped monolayer MoS 2 journal August 2018
Band structure of monolayer transition-metal dichalcogenides and topological properties of their nanoribbons: Next-nearest-neighbor hopping journal August 2018
Tunable topological Nernst effect in two-dimensional transition-metal dichalcogenides journal August 2018
Phase transition and electronic structure evolution of MoTe 2 induced by W substitution journal October 2018
Valley-polarized magnetic state in hole-doped monolayers of transition-metal dichalcogenides journal October 2018
Zero-point motion and direct-indirect band-gap crossover in layered transition-metal dichalcogenides journal November 2018
Theory of optically induced Förster coupling in van der Waals coupled heterostructures journal January 2019
Geometry and electronic structure of monolayer, bilayer, and multilayer Janus WSSe journal February 2019
Floquet spectrum and two-terminal conductance of a transition-metal dichalcogenide ribbon under a circularly polarized laser field journal February 2019
Spectrum of exciton states in monolayer transition metal dichalcogenides: Angular momentum and Landau levels journal March 2019
Valley splitting in the van der Waals heterostructure WSe 2 / CrI 3 : The role of atom superposition journal March 2019
Strongly distinct electrical response between circular and valley polarization in bilayer transition metal dichalcogenides journal May 2019
Intervalley Scattering and Localization Behaviors of Spin-Valley Coupled Dirac Fermions journal January 2013
Valley-Spin Polarization in the Magneto-Optical Response of Silicene and Other Similar 2D Crystals journal May 2013
Transport Theory of Monolayer Transition-Metal Dichalcogenides through Symmetry journal July 2013
Optical Spectrum of MoS 2 : Many-Body Effects and Diversity of Exciton States journal November 2013
Coherent Electronic Coupling in Atomically Thin MoSe 2 journal May 2014
Exciton Binding Energy and Nonhydrogenic Rydberg Series in Monolayer WS 2 journal August 2014
Nonlinear Valley and Spin Currents from Fermi Pocket Anisotropy in 2D Crystals journal October 2014
Trion-Induced Negative Photoconductivity in Monolayer MoS 2 journal October 2014
Valley Splitting and Polarization by the Zeeman Effect in Monolayer MoSe 2 journal December 2014
Breaking of Valley Degeneracy by Magnetic Field in Monolayer MoSe 2 journal January 2015
Electronic Structure of Epitaxial Single-Layer MoS 2 journal January 2015
Giant Enhancement of the Optical Second-Harmonic Emission of WSe 2 Monolayers by Laser Excitation at Exciton Resonances journal March 2015
Tunable Magnetism and Half-Metallicity in Hole-Doped Monolayer GaSe journal June 2015
Electrical Tuning of Exciton Binding Energies in Monolayer WS 2 journal September 2015
Nonanalyticity, Valley Quantum Phases, and Lightlike Exciton Dispersion in Monolayer Transition Metal Dichalcogenides: Theory and First-Principles Calculations journal October 2015
Anomalous Light Cones and Valley Optical Selection Rules of Interlayer Excitons in Twisted Heterobilayers journal October 2015
Experimental Evidence for Dark Excitons in Monolayer WSe 2 journal December 2015
Exciton Band Structure in Two-Dimensional Materials journal February 2016
Valley Vortex States in Sonic Crystals journal February 2016
Optical Coherence in Atomic-Monolayer Transition-Metal Dichalcogenides Limited by Electron-Phonon Interactions journal March 2016
Magnetic-Field-Induced Rotation of Polarized Light Emission from Monolayer WS 2 journal August 2016
Generation and Evolution of Spin-, Valley-, and Layer-Polarized Excited Carriers in Inversion-Symmetric WSe 2 journal December 2016
Odd-Integer Quantum Hall States and Giant Spin Susceptibility in p -Type Few-Layer WSe 2 journal February 2017
Giant Paramagnetism-Induced Valley Polarization of Electrons in Charge-Tunable Monolayer MoSe 2 journal June 2017
In-Plane Propagation of Light in Transition Metal Dichalcogenide Monolayers: Optical Selection Rules journal July 2017
Magnetooptics of Exciton Rydberg States in a Monolayer Semiconductor journal February 2018
Strongly Interaction-Enhanced Valley Magnetic Response in Monolayer WSe 2 journal February 2018
Unifying Optical Selection Rules for Excitons in Two Dimensions: Band Topology and Winding Numbers journal February 2018
Resonance Profiles of Valley Polarization in Single-Layer MoS 2 and MoSe 2 journal October 2018
Routing a Chiral Raman Signal Based on Spin-Orbit Interaction of Light journal October 2019
Valley-selective chiral phonon replicas of dark excitons and trions in monolayer WS e 2 journal October 2019
Theory of field-modulated spin valley orbital pseudospin physics journal January 2020
Edge Nonlinear Optics on a MoS2 Atomic Monolayer journal May 2014
Electrically Switchable Chiral Light-Emitting Transistor journal April 2014
Ultrafast generation of pseudo-magnetic field for valley excitons in WSe 2 monolayers journal December 2014
2D materials and van der Waals heterostructures journal July 2016
Imaging of pure spin-valley diffusion current in WS 2 -WSe 2 heterostructures journal May 2018
Electronic Spectrum and Optical Properties of Quantum Wires Made from Transition Metal Dichalcogenides journal October 2019
Dirac and Weyl Materials: Fundamental Aspects and Some Spintronics Applications journal June 2016
Two-Dimensional Material Nanophotonics text January 2018
Ferromagnetism in Transitional Metal-Doped MoS2 Monolayer journal March 2016
Effects of substrates on the nonlinear optical responses of two-dimensional materials journal January 2015
Nanophotonics with 2D transition metal dichalcogenides [Invited] journal January 2018
Exciton dynamics in monolayer transition metal dichalcogenides journal January 2016
Sensitive, reproducible, and stable 3D plasmonic hybrids with bilayer WS 2 as nanospacer for SERS analysis journal January 2018
Chiral selection rules for multi-photon processes in two-dimensional honeycomb materials journal January 2019
Second harmonic generation spectroscopy on two-dimensional materials [Invited] journal January 2019
Few-layer MoS_2 saturable absorbers for short-pulse laser technology: current status and future perspectives [Invited] journal January 2015
Excitons in atomically thin 2D semiconductors and their applications journal June 2017
Optoelectronics with single layer group-VIB transition metal dichalcogenides journal September 2018
Enhancing functionalities of atomically thin semiconductors with plasmonic nanostructures journal March 2019
Experimental observation of a negative grey trion in an electron-rich WSe 2 monolayer text January 2019
Biaxial Strain Tuning of Interlayer Excitons in Bilayer MoS2 posted_content August 2019
Directional Control of Charge and Valley Currents in a Graphene-Based Device posted_content November 2018
Electronic Band Structure of Transition Metal Dichalcogenides from Ab Initio and Slater–Koster Tight-Binding Model journal October 2016
Valley-Spin Polarization in the Magneto-Optical Response of Silicene and Other Similar 2D Crystals text January 2013
Optical Generation of Excitonic Valley Coherence in Monolayer WSe2 text January 2013
Chiral d-wave superconductivity in doped graphene text January 2014
\textit{Ab-initio} Tight-Binding Hamiltonian for Transition Metal Dichalcogenides text January 2015
Exciton Diamagnetic Shifts and Valley Zeeman Effects in Monolayer WS$_2$ and MoS$_2$ to 65 Tesla text January 2015
Electronic structures and theoretical modelling of two-dimensional group-VIB transition metal dichalcogenides text January 2015
Exciton Radiative Lifetime in Transition Metal Dichalcogenide Monolayers text January 2016
Dark excitons and the elusive valley polarization in transition metal dichalcogenides text January 2017
Valley Edelstein Effect in Monolayer Transition Metal Dichalcogenides text January 2017
Valleytronics in merging Dirac cones: All-electric-controlled valley filter, valve and universal reversible logic gate text January 2017
Spin-orbit coupling induced valley Hall effects in transition-metal dichalcogenides text January 2017
Investigation of indirect excitons in bulk $2H$-MoS$_2$ using transmission electron energy-loss spectroscopy text January 2018
Controlling valley splitting and Polarization of dark- and bi-excitons in monolayer WS$_2$ by a tilted magnetic field text January 2020

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