Gate-Tunable Negative Longitudinal Magnetoresistance in the Predicted Type-II Weyl Semimetal WTe2

Abstract

The progress in exploiting new electronic materials and devices has been a major driving force in solid-state physics. As a new state of matter, a Weyl semimetal (WSM), particularly a type-II WSM, hosts Weyl fermions as emergent quasiparticles and may harbor novel electrical transport properties because of the exotic Fermi surface. Nevertheless, such a type-II WSM material has not been experimentally observed in nature. In this work, by performing systematic magneto-transport studies on thin films of a predicted material candidate WTe2, we observe notable angle-sensitive (between the electric and magnetic fields) negative longitudinal magnetoresistance (MR), which can likely be attributed to the chiral anomaly in WSM. This phenomenon also exhibits strong planar orientation dependence with the absence of negative longitudinal MR along the tungsten chains (a axis), which is consistent with the distinctive feature of a type-II WSM. By applying a gate voltage, we demonstrate that the Fermi energy can be tuned through the Weyl points via the electric field effect; this is the first report of controlling the unique transport properties in situ in a WSM system. Our results have important implications for investigating simulated quantum field theory in solid-state systems and may open opportunities for implementing new types of electronic applications, such as field-effect chiral electronic devices.

arXiv commentaccepted by Nature Communications; 27 pages, 3 figures, 9 supplementary figures; submitted on May 1st, 2016

References in corpus (41)

• Topological Insulators
• Topological insulators and superconductors
• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
• Type-II Weyl Semimetals
• Weyl Semimetal in a Topological Insulator Multilayer
• Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
• Dirac semimetal in three dimensions
• Titanic Magnetoresistance in WTe2
• Three Dimensional Dirac Semimetal and Quantum Transports in Cd3As2
• Theoretical Discovery/Prediction: Weyl Semimetal states in the TaAs material (TaAs, NbAs, NbP, TaP) class
• Observation of the chiral anomaly induced negative magneto-resistance in 3D Weyl semi-metal TaAs
• Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
• Chiral Anomaly and Classical Negative Magnetoresistance of Weyl Metals
• Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase
• Observation of Weyl nodes in TaAs
• Quantum Hall effects in a Weyl Semi-Metal: possible application in pyrochlore Iridates
• Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl Fermion semimetal
• Recent developments in transport phenomena in Weyl semimetals
• Prediction of the Weyl semimetal in the orthorhombic MoTe2
• Quantum Oscillations from Surface Fermi-Arcs in Weyl and Dirac Semi-Metals
• Negative Magnetoresistance in Dirac Semimetal Cd3As2
• Giant negative magnetoresistance induced by the chiral anomaly in individual Cd3As2 nanowires
• MoTe2: A Type-II Weyl Topological Metal
• Dirac vs. Weyl in topological insulators: Adler-Bell-Jackiw anomaly in transport phenomena
• Time-reversal invariant realization of the Weyl semimetal phase
• Arc-tunable Weyl Fermion metallic state in Mo${}_x$W${}_{1-x}$Te${}_2$
• Adler-Bell-Jackiw anomaly in Weyl semi-metals: Application to Pyrochlore Iridates
• TaIrTe4 a ternary Type-II Weyl semi-metal
• Negative longitudinal magnetoresistance in Dirac and Weyl metals
• Anisotropic Magnetotransport and Exotic Longitudinal Linear Magnetoresistance in WTe2 Crystals
• Axial anomaly and longitudinal magnetoresistance of a generic three dimensional metal
• On the search for the chiral anomaly in Weyl semimetals: The negative longitudinal magnetoresistance
• Tuning Magnetotransport in a Compensated Semimetal at the Atomic Scale
• Weak antilocalization and localization in disordered and interacting Weyl semimetals
• Unsaturated both large positive and negative magnetoresistance in Weyl Semimetal TaP
• Linear magnetoconductivity in an intrinsic topological Weyl semimetal
• Lithography-free Fabrication of High Quality Substrate-supported and Freestanding Graphene devices
• Raman scattering investigation of large positive magnetoresistance material WTe${}_2$
• Necessary and sufficient condition for longitudinal magnetoresistance
• Unoccupied electronic structure and signatures of topological Fermi arcs in the Weyl semimetal candidate Mo${}_x$W${}_{1-x}$Te${}_2$

Cited by in corpus (103)

• Multiple types of topological fermions in transition metal silicides
• Electronic Transport and quantum oscillation of Topological Semimetals
• Topological Semimetals from first-principles
• Extremely high magnetoresistance and conductivity in the type-II Weyl semimetals WP2 and MoP2
• Band signatures for strong nonlinear Hall effect in bilayer WTe${}_2$
• Weyl, Dirac and high-fold chiral fermions in topological quantum materials
• Topological quantum materials from the viewpoint of chemistry
• Discovery of a new type of topological Weyl fermion semimetal state in Mo${}_x$W${}_{1-x}$Te${}_2$
• Light control with Weyl semimetals
• Two-dimensional Weyl Half Semimetal and Tunable Quantum Anomalous Hall Effect in Monolayer PtCl${}_3$
• Van der Waals thin films of WTe2 for natural hyperbolic plasmonic surfaces
• Quantum Transport in Topological Semimetals under Magnetic Fields
• Unconventional charge-spin conversion in Weyl-semimetal WTe2
• Experimental observation of anisotropic Adler-Bell-Jackiw anomaly in type-II Weyl semimetal WTe${}_{1.98}$ crystals at the quasi-classical regime
• Black Hole Horizon in a Type-III Dirac Semimetal Zn${}_2$In${}_2$S${}_5$
• Type-III Weyl Semimetals: (TaSe4)2I
• Low-Temperature Eutectic Synthesis of PtTe2 with Weak Antilocalization and Controlled Layer Thinning
• Inter-band Coherence Response to Electric Fields in Crystals
• Planar Hall effect in type II Dirac semimetal VAl${}_3$
• Possible Weyl fermions in the magnetic Kondo system CeSb
• Nonlinear magnetotransport shaped by Fermi surface topology and convexity in WTe2
• Klein tunneling and electron optics in Dirac-Weyl fermion systems with tilted energy dispersion
• Engineering topological phases in the Luttinger semimetal $\alpha$-Sn
• Proximity-Induced Superconductivity with Subgap Anomaly in Type II Weyl Semi-Metal WTe2
• Direct evidence for charge compensation induced large magnetoresistance in thin WTe2
• Quantum Oscillations of The Positive Longitudinal Magnetoconductivity: a Fingerprint for Identifying Weyl Semimetals
• Effect of the type I to type II Weyl semimetal topological transition on superconductivity
• Cleavage Tendency of Anisotropic Two Dimensional Materials: ReX2 (X=S, Se) and WTe2
• Origin of planar Hall effect in type-II Weyl semimetal MoTe2
• Thermopower and Unconventional Nernst in the Predicted Type-II Weyl Semi-metal WTe${}_2$
• Topological semimetal state and field-induced Fermi surface reconstruction in antiferromagnetic monopnictide NdSb
• Strain-engineering the topological type-II Dirac semimetal NiTe${}_2$
• Chirality-dependent planar Hall effect in inhomogeneous Weyl semimetals
• Ideal fully spin-polarized type-II nodal line state in half-metals X2YZ4 (X=K, Cs, Rb, Y=Cr, Cu, Z=Cl, F)
• Pseudospin 3/2 Fermions, Type-II Weyl Semimetals and Critical Weyl Semimetals in Tricolor Cubic Lattice
• Signature of Fermi arc surface states in Andreev reflection at the WTe${}_2$ Weyl semimetal surface
• Magneto-transport phenomena of type-I multi-Weyl semimetals in co-planar setups
• Intrinsic negative magnetoresistance from the chiral anomaly of multifold fermions
• Weak Localization and Antilocalization in Topological Materials with Impurity Spin-Orbit Interactions
• Electrically tunable valley polarization in Weyl semimetals with tilted energy dispersion
• Experimental Progress on Layered Topological Semimetals
• Large magnetoresistance and non-zero Berry phase in the nodal-line semimetal MoO2
• Quantum-oscillation-modulated angular dependences of the positive longitudinal magnetoconductivity and planar Hall effect in Weyl semimetals
• Planar Thermal Hall Effect in Weyl Semimetals
• Thickness dependent electronic structure in WTe${}_2$ thin films
• Quantum Transport in Topological Semimetals under Magnetic Fields (II)
• Electron Transport in Dirac and Weyl Semimetals
• Topology of Triple-Point Metals
• Large enhancement of conductivity in Weyl semimetals with tilted cones: Pseudorelativity and linear response
• Large and Robust Charge-to-Spin Conversion in Sputtered Conductive WTex with Disorder
• Observation of Shubnikov-de Haas Oscillations in Large-Scale Weyl Semimetal WTe2 Films
• Zero-index Weyl metamaterials
• Negative longitudinal magnetoresistance in GaAs quantum wells
• Tunable Low-Loss Hyperbolic Plasmon Polaritons in a T${}_d$-WTe${}_2$ Single Layer
• Robust negative longitudinal magnetoresistance and spin-orbit torque in sputtered Pt3Sn topological semimetal
• Quantum Transport in Weyl Semimetal Thin Films in the Presence of Spin-Orbit Coupled Impurities
• Engineering Dirac states in graphene: Coexisting type-I and type-II Floquet-Dirac fermions
• Topological Magnus responses in two and three dimensional systems
• Molecular beam epitaxy of the magnetic kagome metal FeSn on LaAlO3 (111)
• Effect of chirality imbalance on Hall transport of PrRhC${}_2$
• Universal response of the type-II Weyl semimetals phase diagram
• Realization of a double-slit SQUID geometry by Fermi arc surface states in a WTe${}_2$ Weyl semimetal
• Magnetoconductivity of type-II Weyl semimetals
• Multivalued current-phase relationship in a.c. Josephson effect for a three-dimensional Weyl semimetal WTe${}_2$
• Thickness dependent transition from the 1T${}^{\prime }$ to Weyl semimetal phase in ultrathin MoTe${}_2$: Electrical transport, Noise and Raman studies
• Floquet spectrum and driven conductance in Dirac materials: Effects of Landau-Zener-Stückelberg-Majorana interferometry
• Signatures of Helical Edge Transport in Millimetre-Scale Thin Films of Na3Bi
• The study on quantum material WTe2
• Conductance modulation in Weyl semimetals with tilted energy dispersion without a band gap
• Topological Phase Transition-Induced Tri-Axial Vector Magnetoresistance in (Bi1-xInx)2Se3 Nanodevices
• Magnetic properties of Type I and II Weyl Superconductors
• Distinct signatures of particle-hole symmetry breaking in transport coefficients for generic multi-Weyl semimetals
• Symmetry-selective quasiparticle scattering and electric field tunability of the ZrSiS surface electronic structure
• Signature of topological non-trivial band structure in Ta${}_3$SiTe${}_6$
• Type I superconductivity in Dirac materials
• Butterfly-like anisotropic magnetoresistance and angle-dependent Berry phase in Type-II Weyl semimetal WP2
• Anomalous tunneling characteristic of Weyl semimetals with tilted energy dispersion
• Enhancing Perpendicular Magnetic Anisotropy in Garnet Ferrimagnet by Interfacing with Few-Layer WTe2
• Planar Hall effect in type-II Weyl semimetal WTe2
• Temperature effect on lattice and electronic structures of WTe${}_2$ from first-principles study
• The Emerging Weak Antilocalization Effect in Semimetal Ta${}_{0.7}$Nb${}_{0.3}$Sb${}_2$ Single Crystal
• Disorder-induced coupling of Weyl nodes in WTe${}_2$
• Magnetic field-induced type-II Weylsemimetallic state in geometrically frustrated Shastry-Sutherland lattice GdB4
• Robustness of spin-polarized edge states in a two-dimensional topological semimetal without inversion symmetry
• Transmission/reflection coefficients and Faraday/Kerr rotations as a function of applied magnetic fields in spin-orbit coupled Dirac metals
• XFe4Ge2 (X = Y, Lu) and Mn3Pt: Filling-enforced magnetic topological metals
• Impurity and dispersion effects on the linear magnetoresistance in the quantum limit
• Two-dimensional Dirac semimetals with tunable edge states
• Dimensionality-dependent type-II Weyl semimetal state in Mo${}_{0.25}$W${}_{0.75}$Te${}_2$
• Electronic structure in a transition metal dipnictide TaAs2
• Significant Chiral Magnetotransport Magnified by Multiple Weyl Nodes
• Large circular photogalvanic effect in the noncentrosymmetric magnetic Weyl semimetal CeAlSi
• Singular nonlinear response in metals due to divergent Berry curvature: application to magneto-resistance in metals with type-II Weyl nodes
• Materials and possible mechanisms of extremely large magnetoresistance: A review
• Systematic study of superconductivity in few-layer $T_d$-MoTe${}_2$
• Probing quantum geometric nonlinear magnetization via second-harmonic magneto-optical Kerr effect
• The out-of-plane magnetoresistance in a Van der Waals thin film of WTe2
• Mechanically tunable spontaneous vertical charge redistribution in few-layer WTe2
• Controlled synthesis of MoxW1-xTe2 atomic layers with emergent quantum states
• A non-invasive dry-transfer method for fabricating mesoscopic devices on sensitive materials
• Aslamazov Larkin Conductivity in Weyl Semimetals
• Electrically controlled quantum transition to an anomalous metal in 2D
• Chiral Anomaly Induced Transverse Planar Transport Phenomena in Three Dimensional Spin-Orbit Coupled Metals