Topological phase transition in MoTe${}_2$: A Review

Abstract

Transition metal dichalcogenides (TMDs) are a branch of two-dimensional materials which in addition to having an easy-to-exfoliate layered structure, also host semiconducting, metallic, superconducting, and topological properties in various polymorphs with potential applications. MoTe${}_2$ is an example of such a TMD, which shows semiconducting (in 2H phase), metallic (in 1T' phase), topological Weyl semimetallic and superconducting behavior (in Td phase). Consequently, an extensive amount of research has been done on MoTe${}_2$, particularly on the topological phase transition between the metallic-type 1T' phase and the topological Td phase. This phase transition has been reviewed and its association with the crystal structure, charge transport, and electronic band structure is elaborately discussed. Also, the effect of various stimuli like reduced dimensionality, pressure, charge doping, and chemical substitution, which affect the structural transition as well as the superconducting transition temperatures is reviewed; thereby, suggesting certain correlations between the apparently unrelated structural and superconducting phase transitions. The review also brings out some open questions which are likely to interest the community to address the physics associated with the phase transition and its potential applications.

arXiv comment22 pages, 12 figures

References in corpus (38)

• Two-Dimensional Gas of Massless Dirac Fermions in Graphene
• Topological Insulators
• Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
• Type-II Weyl Semimetals
• Quantum Spin Hall Effect in Silicene
• Quantum Spin Hall Effect and Topological Field Effect Transistor in Two-Dimensional Transition Metal Dichalcogenides
• Topological Materials: Weyl Semimetals
• Large-gap quantum spin Hall insulators in tin films
• Controlling electron-phonon interactions in graphene at ultra high carrier densities
• Experimental observation of topological Fermi arcs in type-II Weyl semimetal MoTe2
• Superconductivity in Weyl Semimetal Candidate MoTe2
• Spectroscopic evidence for type II Weyl semimetal state in MoTe2
• Phonon anharmonicities in graphite and graphene
• Interface engineering of quantum Hall effects in digital transition metal oxide heterostructures
• Charge Transport in Weyl Semimetals
• MoTe2: A Type-II Weyl Topological Metal
• Higher-Order Topology, Monopole Nodal Lines, and the Origin of Large Fermi Arcs in Transition Metal Dichalcogenides XTe${}_2$ (X=Mo,W)
• Possible topologically non-trivial superconducting order parameter in type-II Weyl semimetal T_d-MoTe_2
• Origins of the structural phase transitions in MoTe${}_2$ and WTe${}_2$
• Polytypism, polymorphism and superconductivity in TaSe2-xTex
• Understanding topological phase transition in transition metal dichalcogenides
• Superconductivity enhancement in the S-doped Weyl semimetal candidate MoTe2
• Raman scattering in transition metal dichalcogenides MTe2 (M = Mo, W)
• Evolution of Raman spectra in Mo${}_{1-x}$W${}_x$Te${}_2$ alloys
• Dimensionality-driven orthorhombic MoTe2 at room temperature
• MoTe2 : An uncompensated semimetal with extremely large magnetoresistance
• Tailoring the Phase Transition and Electron-Phonon Coupling in 1T'-MoTe2 by Charge Doping: A Raman Study
• Phonon Anharmonicity in Bulk $T_d$-MoTe${}_2$
• Surface superconductivity in the Weyl semimetal MoTe2 detected by point contact spectroscopy
• Enhancement of the superconducting transition temperature by Re doping in Weyl semimetal MoTe${}_2$
• New polymorphic phase and rich phase diagram in the PdSe2-xTex system
• Topological phase transition between distinctWeyl semimetal states in MoTe2
• Enhanced Superconductivity in the Se-substituted 1T-PdTe${}_2$
• Origin of magnetoresistance suppression in thin $\gamma$-MoTe${}_2$
• Appearance of T${}_d^{\ast }$ phase across the T${}_d$-1T${}^{\prime }$ phase boundary in Weyl semimetal MoTe${}_2$
• Thickness dependent transition from the 1T${}^{\prime }$ to Weyl semimetal phase in ultrathin MoTe${}_2$: Electrical transport, Noise and Raman studies
• Emergence of topologically protected states in MoTe${}_2$ Weyl semimetal with layer stacking order
• Superconductivity in doped Weyl semimetal Mo${}_{0.9}$Ir${}_{0.1}$Te${}_2$ with broken inversion symmetry

Cited by in corpus (2)

• Superconducting pairing symmetry in MoTe${}_2$
• Single Crystal Growth and Transport Properties of van der Waals Materials $AB$Te${}_4$ ($A/B$ = Ti, Zr, Hf)