Field induced hysteretic structural phase switching and possible CDW in Re-doped MoTe${}_2$

Abstract

Novel electronic systems displaying exotic physical properties can be derived from complex topological materials through chemical doping. MoTe${}_2$, the candidate type-II Weyl semimetal shows dramatically enhanced superconductivity up to 4.1 K upon Re doping in Mo sites. Based on bulk transport and local scanning tunneling microscopy (STM) here we show that Re doping also leads to the emergence of a possible charge density wave (CDW) phase in Re${}_{0.2}$Mo${}_{0.8}$Te${}_2$. In addition, the tunneling $I-V$ characteristics display non-linearity and hysteresis which is commensurate with a hysteresis observed in the change in tip-height ($z$) as a function of applied voltage $V$. The observations indicate an electric field induced hysteretic switching consistent with piezoelectricity and possible ferroelectricity.

arXiv commentTo appear in Journal of Physics: Condensed Matter (JPCM)

References in corpus (20)

• 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
• 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
• Experimental Realization of Type-II Dirac Fermions in PdTe${}_2$ Superconductor
• Fermi arcs and their topological character in the candidate type-II Weyl semimetal MoTe2
• Raman signatures of inversion symmetry breaking and structural phase transition in type-II Weyl semimetal MoTe2
• Quantum Spin Hall Effect and Topological Phase Transition in Two-Dimensional Square Transition Metal Dichalcogenides
• Possible topologically non-trivial superconducting order parameter in type-II Weyl semimetal T_d-MoTe_2
• Metallic "Ferroelectricity" in the Pyrochlore Cd2Re2O7
• Van der Waals Stacking Induced Topological Phase Transition in Layered Ternary Transition Metal Chalcogenides
• A novel mechanism of charge density wave in a transition metal dichalcogenide
• Conventional Superconductivity in Type II Dirac Semimetal PdTe${}_2$
• Simple model for second-order topological insulators and loop-nodal semimetals in Transition Metal Dichalcogenides XTe${}_2$ (X=Mo,W)
• Enhancement of the superconducting transition temperature by Re doping in Weyl semimetal MoTe${}_2$
• A de Hass-van Alphen study of the Type-II Dirac semimetal candidates $A$Te${}_2$ ($A=$ Pt, Pd)
• Possible charge-density-wave signatures in the anomalous resistivity of Li-intercalated multilayer MoS2
• Nontrivial Metallic State of Molybdenum Disulfide

Cited by in corpus (1)

• Superconductivity in doped Weyl semimetal Mo${}_{0.9}$Ir${}_{0.1}$Te${}_2$ with broken inversion symmetry