Bulk Fermi-surface of the Weyl type-II semi-metallic candidate MoTe2

Abstract

The electronic structure of WTe${}_2$ and orthorhombic $\gamma -$MoTe${}_2$, are claimed to contain pairs of Weyl type-II points. A series of ARPES experiments claim a broad agreement with these predictions. We synthesized single-crystals of MoTe${}_2$ through a Te flux method to validate these predictions through measurements of its bulk Fermi surface (FS) \emph{via} quantum oscillatory phenomena. We find that the superconducting transition temperature of $\gamma -$MoTe${}_2$ depends on disorder as quantified by the ratio between the room- and low-temperature resistivities, suggesting the possibility of an unconventional superconducting pairing symmetry. Similarly to WTe${}_2$, the magnetoresistivity of $\gamma -$MoTe${}_2$ does not saturate at high magnetic fields and can easily surpass $10^6$ \%. Remarkably, the analysis of the de Haas-van Alphen (dHvA) signal superimposed onto the magnetic torque, indicates that the geometry of its FS is markedly distinct from the calculated one. The dHvA signal also reveals that the FS is affected by the Zeeman-effect precluding the extraction of the Berry-phase. A direct comparison between the previous ARPES studies and density-functional-theory (DFT) calculations reveals a disagreement in the position of the valence bands relative to the Fermi level ${\epsilon }_F$. Here, we show that a shift of the DFT valence bands relative to ${\epsilon }_F$, in order to match the ARPES observations, and of the DFT electron bands to explain some of the observed dHvA frequencies, leads to a good agreement between the calculations and the angular dependence of the FS cross-sectional areas observed experimentally. However, this relative displacement between electron- and hole-bands eliminates their crossings and, therefore, the Weyl type-II points predicted for $\gamma -$MoTe${}_2$.

arXiv comment13 pages, 7 figures, supplementary file not included (in press)

References in corpus (54)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
• Weyl and Dirac Semimetals in Three Dimensional Solids
• Optimized norm-conserving Vanderbilt pseudopotentials
• Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
• Type-II Weyl Semimetals
• Quantum Spin Hall Effect and Topological Field Effect Transistor in Two-Dimensional Transition Metal Dichalcogenides
• Topological Materials: Weyl Semimetals
• Titanic Magnetoresistance in WTe2
• 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
• Weyl semimetal phase in non-centrosymmetric transition metal monophosphides
• Negative magnetoresistance without well-defined chirality in the Weyl semimetal TaP
• Spintronics and Pseudospintronics in Graphene and Topological Insulators
• Experimental observation of topological Fermi arcs in type-II Weyl semimetal MoTe2
• Superconductivity in Weyl Semimetal Candidate MoTe2
• Prediction of the Weyl semimetal in the orthorhombic MoTe2
• Edge conduction in monolayer WTe2
• Spectroscopic evidence for type II Weyl semimetal state in MoTe2
• Observation of the Type-II Weyl Semimetal Phase in MoTe2
• MoTe2: A Type-II Weyl Topological Metal
• Transport evidence for Fermi-arc mediated chirality transfer in the Dirac semimetal Cd${}_3$As${}_2$
• Superconductivity emerging from suppressed large magnetoresistant state in WTe2
• Arc-tunable Weyl Fermion metallic state in Mo${}_x$W${}_{1-x}$Te${}_2$
• Electronic structure basis for the titanic magnetoresistance in WTe${}_2$
• Phase analysis of quantum oscillations in graphite
• Quantum oscillations, thermoelectric coefficients and the Fermi surface of semi-metallic WTe2
• TaIrTe4 a ternary Type-II Weyl semi-metal
• Fermi arcs and their topological character in the candidate type-II Weyl semimetal MoTe2
• Temperature induced Lifshitz transition in WTe2
• Numerical extraction of de Haas - van Alphen frequencies from calculated band energies
• Robust Type-II Weyl Semimetal Phase in Transition Metal Diphosphides XP${}_2$ (X = Mo, W)
• Heavy Fermion Superconductivity in the Quadrupole Ordered State of PrV2Al20
• Discovery of a new type of topological Weyl fermion semimetal state in Mo${}_x$W${}_{1-x}$Te${}_2$
• Tuning Magnetotransport in a Compensated Semimetal at the Atomic Scale
• Field-Selective Anomaly and Chiral Mode Reversal in Type-II Weyl Materials
• Engineering the structural and electronic phases of MoTe2 through W substitution
• Hall effect in the extremely large magnetoresistance semimetal WTe${}_2$
• Pi Berry phase and Zeeman splitting of TaP probed by high field magnetotransport measurements
• Experimental realization of type-II Weyl state in non-centrosymmetric TaIrTe${}_4$
• Magnetoresistance from Fermi Surface Topology
• Origins of the structural phase transitions in MoTe${}_2$ and WTe${}_2$
• Van der Waals Stacking Induced Topological Phase Transition in Layered Ternary Transition Metal Chalcogenides
• Chiral anomaly and longitudinal magnetotransport in type-II Weyl semimetals
• Perfect charge compensation in WTe2 for the extraordinary magnetoresistance: From bulk to monolayer
• Hall-effect within the colossal magnetoresistive semi-metallic state of MoTe2
• Role of spin-orbit coupling and evolution of the electronic structure of WTe${}_2$ under an external magnetic field
• Magnetotransport and de Haas-van Alphen measurements in the type-II Weyl semimetal TaIrTe${}_4$
• A de Haas-van Alphen study of the Fermi surfaces of superconducting LiFeP and LiFeAs
• Breakdown of compensation and persistence of non-saturating magnetoresistance in WTe2 thin flakes
• MoTe2 : An uncompensated semimetal with extremely large magnetoresistance
• Fermi surface of the Weyl type-II metallic candidate WP2
• Coexistence of Tunable Weyl Points and Topological Nodal Lines in Ternary Transition-Metal Telluride TaIrTe4
• Anisotropy of the in-plane angular magnetoresistance of electron-doed Sr1-xLaxCuO2 thin films

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• Higher-Order Topology, Monopole Nodal Lines, and the Origin of Large Fermi Arcs in Transition Metal Dichalcogenides XTe${}_2$ (X=Mo,W)
• Electronic Transport and quantum oscillation of Topological Semimetals
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• Origin of magnetoresistance suppression in thin $\gamma$-MoTe${}_2$
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• Appearance of T${}_d^{\ast }$ phase across the T${}_d$-1T${}^{\prime }$ phase boundary in Weyl semimetal MoTe${}_2$
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• Superconducting properties of MoTe${}_2$ from the $abinitio$ anisotropic Migdal-Eliashberg theory
• Analogies between the Black Hole Interior and the Type II Weyl Semimetals
• Evolution of the structural transition in Mo${}_{1-x}$W${}_x$Te${}_2$
• Large Magnetoresistance in Topological Insulator Candidate TaSe3
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• A numerically exact study of Weyl superconductivity
• The type II Weyl semimetals at low temperatures: chiral anomaly, elastic deformations, zero sound
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• Fractional corner charges in threefold-symmetric two-dimensional materials with fragile topology
• Chiral anomaly and positive longitudinal magnetoresistance in the type-II Dirac semimetals $A_x$PdTe${}_2$ (\textit{A} = Cu, Ag)
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• Surface region band enhancement in noble gas adsorption assisted ARPES on kagome superconductor RbV3Sb5
• Drastic enhancement of the superconducting temperature in type-II Weyl semimetal candidate MoTe${}_2$ via biaxial strain
• Shubnikov-de Haas oscillations of biaxial-strain-tuned superconductors in pulsed magnetic field up to 60 T
• Pressure induced topological quantum phase transition in Weyl semimetal T_d-MoTe_2
• Hydrogen-impurity induced unconventional magnetism in semiconducting molybdenum ditelluride
• Dimensionality-dependent type-II Weyl semimetal state in Mo${}_{0.25}$W${}_{0.75}$Te${}_2$
• Suppression of both superconductivity and structural transition in hole-doped MoTe${}_2$ induced by Ta substitution
• Systematic study of superconductivity in few-layer $T_d$-MoTe${}_2$
• Transport properties of semimetallic transition metal dichalcogenides
• Classical limit for Dirac fermions with modified action in the presence of the black hole