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

Title: Anomalous phonon-mode dependence in polarized Raman spectroscopy of the topological Weyl semimetal TaP

Journal Article · · Physical Review B

Topological Weyl semimetals (WSMs) have attracted widespread interest due to the chiral Weyl fermions and surface Fermi arcs that enable unique optical and transport phenomena. In this work, we present angle-resolved Raman spectroscopy of TaP, a prototypical noncentrosymmetric WSM, for five excitation wavelengths ranging from 364 to 785 nm. The Raman-active modes, $$A_1$$, $$B^1_1$$, and $$B^2_1$$ modes, exhibit two main unique features beyond the conventional Raman theory. First, the relative intensities of Raman-active modes change as a function of the excitation wavelength. Second, angle-resolved polarized Raman spectra show systematic deviation from the Raman tensor theory. In particular, the $$B^1_1$$ mode is absent for 633-nm excitation, whereas the $$B^2_1$$ mode shows an unusual twofold symmetry instead of a fourfold symmetry for 488-, 532-, and 633-nm excitations. Finally, these unconventional phenomena are attributed to the interference effect in the Raman process owing to the existence of multiple carrier pockets with almost the same energy but different symmetries.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Japan Society for the Promotion of Science (JSPS); Ministry of Education, Culture, Sports, Science and Technology (MEXT)
Grant/Contract Number:
SC0020148; 18H01810
OSTI ID:
1803914
Journal Information:
Physical Review B, Vol. 101, Issue 1; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (73)

Generalized Gradient Approximation Made Simple journal October 1996
Low-temperature Raman fingerprints for few-quintuple layer topological insulator Bi 2 Se 3 films epitaxied on GaAs journal May 2014
Raman Signatures of Broken Inversion Symmetry and In‐Plane Anisotropy in Type‐II Weyl Semimetal Candidate TaIrTe 4 journal May 2018
Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs text January 2015
Nonadiabatic Kohn Anomaly in a Doped Graphene Monolayer journal December 2006
Nonlinear photoresponse of type-II Weyl semimetals journal March 2019
An updated version of wannier90: A tool for obtaining maximally-localised Wannier functions journal August 2014
QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials journal September 2009
TaIrTe4 a ternary Type-II Weyl semi-metal text January 2016
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Type-II Weyl Semimetals text January 2015
Experimental observation of topological Fermi arcs in type-II Weyl semimetal MoTe2 journal September 2016
Raman study of lattice dynamics in Weyl semimetal TaAs text January 2015
Signatures of the Adler–Bell–Jackiw chiral anomaly in a Weyl fermion semimetal journal February 2016
Weyl Semimetal Phase in Noncentrosymmetric Transition-Metal Monophosphides journal March 2015
Strong Intrinsic Spin Hall Effect in the TaAs Family of Weyl Semimetals journal September 2016
Fermi surface interconnectivity and topology in Weyl fermion semimetals TaAs, TaP, NbAs, and NbP journal December 2015
Experimental discovery of a topological Weyl semimetal state in TaP journal November 2015
Plasmon mode as a detection of the chiral anomaly in Weyl semimetals text January 2014
Superconductivity in Weyl Semimetal Candidate MoTe2 text January 2015
Experimental Discovery of Weyl Semimetal TaAs journal July 2015
Probing the Chiral Anomaly with Nonlocal Transport in Three-Dimensional Topological Semimetals journal September 2014
Weyl and Dirac Semimetals in Three Dimensional Solids text January 2017
Raman signatures of inversion symmetry breaking and structural phase transition in type-II Weyl semimetal MoTe2 journal December 2016
Activation of new Raman modes by inversion symmetry breaking in type II Weyl semimetal candidate T'-MoTe2 text January 2016
Spatially dispersive circular photogalvanic effect in a Weyl semimetal journal July 2019
A PCAC puzzle: π0→γγ in the σ-model journal March 1969
Achieving accurate energetics beyond (semi-)local density functional theory: Illustrated with transition metal disulfides, Cu 2 ZnSnS 4 , and Na 3 PS 4 related semiconductors journal January 2019
Topological electronic structure and Weyl semimetal in the TlBiSe 2 class of semiconductors journal September 2012
Observation of Weyl nodes in TaAs journal August 2015
Chiral Anomaly and Second Harmonic Generation in Weyl Semimetals text January 2016
Activation of New Raman Modes by Inversion Symmetry Breaking in Type II Weyl Semimetal Candidate T ′-MoTe 2 journal August 2016
Anomalous in-plane anisotropic Raman response of monoclinic semimetal 1 T´-MoTe 2 journal May 2017
Interplay of valley selection and helicity exchange of light in Raman scattering for graphene and MoS 2 journal March 2018
TaIrTe 4 : A ternary type-II Weyl semimetal journal May 2016
Observation of Weyl nodes in TaAs text January 2015
Experimental discovery of a topological Weyl semimetal state in TaP text January 2015
A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu journal April 2010
Signatures of the Chiral Anomaly in Phonon Dynamics journal September 2017
Negative magnetoresistance without well-defined chirality in the Weyl semimetal TaP journal May 2016
Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl Fermion semimetal text January 2016
Lattice dynamics of Dirac node-line semimetal ZrSiS journal August 2017
Weyl and Dirac semimetals in three-dimensional solids journal January 2018
Chiral anomaly and second-harmonic generation in Weyl semimetals journal February 2017
Enhanced quasiparticle dynamics of quantum well states: The giant Rashba system BiTeI and topological insulators journal May 2014
Weyl semimetal phase in non-centrosymmetric transition metal monophosphides text January 2015
Enhanced quasiparticle dynamics of quantum well states: the giant Rashba system BiTeI and topological insulators text January 2013
Type-II Weyl semimetals journal November 2015
Colossal mid-infrared bulk photovoltaic effect in a type-I Weyl semimetal journal March 2019
Sensitive Phonon-Based Probe for Structure Identification of 1T′ MoTe 2 journal June 2017
Extremely large magnetoresistance in the type-II Weyl semimetal Mo Te 2 journal December 2016
Raman signatures of inversion symmetry breaking and structural phase transition in type-II Weyl semimetal MoTe2 text January 2016
Non-adiabatic Kohn-anomaly in a doped graphene monolayer text January 2006
When chiral photons meet chiral fermions - Photoinduced anomalous Hall effects in Weyl semimetals text January 2015
Characterization of Few-Layer 1T′ MoTe 2 by Polarization-Resolved Second Harmonic Generation and Raman Scattering journal October 2016
Anisotropic Electron-Photon and Electron-Phonon Interactions in Black Phosphorus journal March 2016
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Signatures of the chiral anomaly in phonon dynamics text January 2016
Direct optical detection of Weyl fermion chirality in a topological semimetal journal May 2017
Axial-Vector Vertex in Spinor Electrodynamics journal January 1969
Discovery of a Weyl fermion semimetal and topological Fermi arcs journal July 2015
Extremely large magnetoresistance and ultrahigh mobility in the topological Weyl semimetal candidate NbP journal June 2015
The Adler-Bell-Jackiw anomaly and Weyl fermions in a crystal journal November 1983
Quantized circular photogalvanic effect in Weyl semimetals journal July 2017
Prediction of Weyl semimetal in orthorhombic MoTe 2 journal October 2015
Reducing Dzyaloshinskii-Moriya interaction and field-free spin-orbit torque switching in synthetic antiferromagnets journal May 2021
Evidence for topological type-II Weyl semimetal WTe2 journal December 2017
Chiral anomaly and classical negative magnetoresistance of Weyl metals journal September 2013
Self-interaction correction to density-functional approximations for many-electron systems journal May 1981
Extremely large magnetoresistance and ultrahigh mobility in the topological Weyl semimetal NbP text January 2015
Experimental discovery of Weyl semimetal TaAs text January 2015
Superconductivity in Weyl semimetal candidate MoTe2 journal March 2016
Raman Signatures of Broken Inversion Symmetry and In-plane Anisotropy in Type-II Weyl Semimetal Candidate TaIrTe4 text January 2018

Similar Records

Anisotropic Fano resonance in the Weyl semimetal candidate LaAlSi
Journal Article · Wed Dec 30 00:00:00 EST 2020 · Physical Review. B · OSTI ID:1803914

Noncollinear ferromagnetic Weyl semimetal with anisotropic anomalous Hall effect
Journal Article · Wed Mar 24 00:00:00 EDT 2021 · Physical Review. B · OSTI ID:1803914

Topological Singularity Induced Chiral Kohn Anomaly in a Weyl Semimetal
Journal Article · Thu Jun 11 00:00:00 EDT 2020 · Physical Review Letters · OSTI ID:1803914