skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Anomalous interlayer vibrations in strongly coupled layered PdSe2

Journal Article · · 2D Materials

In this work, we show unusual effects of strong interlayer coupling on low-frequency (LF) Raman scattering in exfoliated PdSe2 crystals with different number of layers. Unlike many other layered materials, it is found that the measured frequencies of the breathing modes cannot be simply described by a conventional linear chain model (LCM) that treats each layer as a single rigid object. By using first-principles calculations, we show that strong deviations from layer rigidity can occur for the LF breathing vibrations of PdSe2, which accounts for the observed disagreement with the conventional LCM. The layer non-rigidity and strong interlayer coupling could also explain the unusual strong intensities of the LF breathing modes that are comparable with those of the high-frequency Raman modes. These strong intensities allowed us to use a set of the measured LF Raman lines as unique fingerprints for a precise assignment of the layer numbers. The assignment of the layer numbers was further confirmed using second harmonic generation that appeared only in the noncentrosymmetric even-layer PdSe2 crystals. In conclusion, this work thus demonstrates a simple and fast approach for the determination of the number of layers in 2D materials with strong interlayer coupling and non-rigid interlayer vibrations.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1437902
Journal Information:
2D Materials, Vol. 5, Issue 3; ISSN 2053-1583
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 53 works
Citation information provided by
Web of Science

References (64)

Van der Waals heterostructures journal July 2013
Tailoring Vacancies Far Beyond Intrinsic Levels Changes the Carrier Type and Optical Response in Monolayer MoSe 2− x Crystals journal July 2016
Low-Frequency Shear and Layer-Breathing Modes in Raman Scattering of Two-Dimensional Materials journal October 2016
The shear mode of multilayer graphene journal February 2012
Low-frequency Raman modes and electronic excitations in atomically thin MoS 2 films journal December 2012
Raman spectroscopy of shear and layer breathing modes in multilayer MoS 2 journal March 2013
Interlayer Breathing and Shear Modes in Few-Trilayer MoS 2 and WSe 2 journal February 2013
Raman spectroscopy of transition metal dichalcogenides journal July 2016
Low-Frequency Raman Fingerprints of Two-Dimensional Metal Dichalcogenide Layer Stacking Configurations journal May 2015
Twisted MoSe 2 Bilayers with Variable Local Stacking and Interlayer Coupling Revealed by Low-Frequency Raman Spectroscopy journal January 2016
Low-Frequency Interlayer Raman Modes to Probe Interface of Twisted Bilayer MoS 2 journal January 2016
Stacking sequence determines Raman intensities of observed interlayer shear modes in 2D layered materials – A general bond polarizability model journal October 2015
Stacking-dependent shear modes in trilayer graphene journal January 2015
Resonant Raman spectroscopy of twisted multilayer graphene journal November 2014
Interface Coupling in Twisted Multilayer Graphene by Resonant Raman Spectroscopy of Layer Breathing Modes journal June 2015
Raman characterization of AB- and ABC-stacked few-layer graphene by interlayer shear modes journal April 2016
Anomalous Lattice Vibrations of Single- and Few-Layer MoS 2 journal March 2010
Evolution of interlayer coupling in twisted molybdenum disulfide bilayers journal September 2014
Rapid and Nondestructive Identification of Polytypism and Stacking Sequences in Few-Layer Molybdenum Diselenide by Raman Spectroscopy journal July 2015
Davydov Splitting and Excitonic Resonance Effects in Raman Spectra of Few-Layer MoSe 2 journal July 2016
Rigid-layer Raman-active modes in N -layer transition metal dichalcogenides: interlayer force constants and hyperspectral Raman imaging : Rigid-layer Raman-active modes in journal October 2017
Unified Description of the Optical Phonon Modes in N -Layer MoTe 2 journal September 2015
Polytypism and unexpected strong interlayer coupling in two-dimensional layered ReS 2 journal January 2016
Observation of anisotropic interlayer Raman modes in few-layer ReS 2 journal November 2015
Coupling and Stacking Order of ReS 2 Atomic Layers Revealed by Ultralow-Frequency Raman Spectroscopy journal January 2016
Splitting of Interlayer Shear Modes and Photon Energy Dependent Anisotropic Raman Response in N -Layer ReSe 2 and ReS 2 journal January 2016
Low frequency Raman spectroscopy of few-atomic-layer thick hBN crystals journal June 2017
Low-Frequency Interlayer Breathing Modes in Few-Layer Black Phosphorus journal May 2015
Large Frequency Change with Thickness in Interlayer Breathing Mode—Significant Interlayer Interactions in Few Layer Black Phosphorus journal May 2015
Interfacial Interactions in van der Waals Heterostructures of MoS 2 and Graphene journal September 2017
Review on the Raman spectroscopy of different types of layered materials journal January 2016
Lattice vibrations and Raman scattering in two-dimensional layered materials beyond graphene journal September 2016
Resonance Raman effects in transition metal dichalcogenides: Resonance Raman effects in transition metal dichalcogenides journal July 2017
Interlayer bond polarizability model for stacking-dependent low-frequency Raman scattering in layered materials journal January 2017
PdSe 2 : Pentagonal Two-Dimensional Layers with High Air Stability for Electronics journal September 2017
Novel Pd 2 Se 3 Two-Dimensional Phase Driven by Interlayer Fusion in Layered PdSe 2 journal July 2017
High Mobility 2D Palladium Diselenide Field-Effect Transistors with Tunable Ambipolar Characteristics journal April 2017
Experimental and Theoretical Investigation on the Relative Stability of the PdS 2 - and Pyrite-Type Structures of PdSe 2 journal March 2004
Electronic, transport, and optical properties of bulk and mono-layer PdSe 2 journal October 2015
Identifying the Crystalline Orientation of Black Phosphorus Using Angle-Resolved Polarized Raman Spectroscopy journal January 2015
Temperature-Activated Layer-Breathing Vibrations in Few-Layer Graphene journal July 2014
van der Waals Bonding in Layered Compounds from Advanced Density-Functional First-Principles Calculations journal June 2012
Extraordinarily Strong Interlayer Interaction in 2D Layered PtS 2 journal February 2016
Long-wavelength lattice vibrations of MoS2 and GaSe journal May 1973
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Generalized Gradient Approximation Made Simple journal October 1996
Van der Waals Density Functional for General Geometries journal June 2004
First-principles calculations of the ferroelastic transition between rutile-type and CaCl 2 -type SiO 2 at high pressures journal October 2008
Electronic and thermoelectric properties of assembled graphene nanoribbons with elastic strain and structural dislocation journal April 2013
Identifying the Crystalline Orientation of Black Phosphorus Using Angle-Resolved Polarized Raman Spectroscopy journal January 2015
Experimental and Theoretical Investigation on the Relative Stability of the PdS2- and Pyrite-Type Structures of PdSe2. journal June 2004
High-resolution X-ray luminescence extension imaging journal February 2021
Interface Coupling in Twisted Multilayer Graphene by Resonant Raman Spectroscopy of Layer Breathing Modes. text January 2015
The shear mode of multilayer graphene journalarticle January 2012
Anomalous Lattice Vibrations of Single and Few-Layer MoS2 text January 2010
The Shear Mode of Multi-Layer Graphene text January 2011
Stacking-dependent shear modes in trilayer graphene text January 2014
Interface coupling in twisted multilayer graphene by resonant Raman spectroscopy of layer breathing modes text January 2015
Unified description of the optical phonon modes in $N$-layer MoTe$_2$ text January 2015
Observation of anisotropic interlayer Raman modes in few-layer ReS2 text January 2015
Coupling and stacking order of ReS2 atomic layers revealed by ultralow-frequency Raman spectroscopy text January 2015
Davydov splitting and excitonic resonance effects in Raman spectra of few-Layer MoSe2 text January 2016
Low frequency Raman spectroscopy of few-atomic-layer thick hBN crystals preprint January 2017
Interlayer bond polarizability model for stacking-dependent low-frequency Raman scattering in layered materials text January 2017

Cited By (7)

Recent Progress on 2D Noble‐Transition‐Metal Dichalcogenides journal October 2019
Anisotropic Growth and Scanning Tunneling Microscopy Identification of Ultrathin Even‐Layered PdSe 2 Ribbons journal September 2019
Exploring the air stability of PdSe2 via electrical transport measurements and defect calculations journal December 2019
Ferroelastic lattice rotation and band-gap engineering in quasi 2D layered-structure PdSe 2 under uniaxial stress journal January 2019
Near-infrared optical transitions in PdSe 2 phototransistors journal January 2019
Penta-PdX 2 (X = S, Se, Te) monolayers: promising anisotropic thermoelectric materials journal January 2019
Spin Polarization Properties of Pentagonal PdSe2 Induced by 3D Transition-Metal Doping: First-Principles Calculations journal November 2018

Similar Records

PdSe2: Pentagonal Two-Dimensional Layers with High Air Stability for Electronics
Journal Article · Tue Sep 05 00:00:00 EDT 2017 · Journal of the American Chemical Society · OSTI ID:1437902

Low-Frequency Interlayer Breathing Modes in Few-Layer Black Phosphorus
Journal Article · Fri May 08 00:00:00 EDT 2015 · Nano Letters · OSTI ID:1437902

Resonance-Enhanced Excitation of Interlayer Vibrations in Atomically Thin Black Phosphorus
Journal Article · Fri May 28 00:00:00 EDT 2021 · Nano Letters · OSTI ID:1437902