Enhancement of the superconducting transition temperature by Re doping in Weyl semimetal MoTe${}_2$

Abstract

This work presents the emergence of superconductivity in Re substituted topological Weyl semimetal MoTe${}_2$. Re substitution for Mo sites lead to a sizable enhancement in the superconducting transition temperature (T${}_c$). A record high T${}_c$ at ambient pressure in a 1T${}^{\prime }$-MoTe${}_2$ (room temperature structure) related sample is observed for the Mo${}_{0.7}$Re${}_{0.3}$Te${}_2$ composition (T${}_c$ = 4.1 K, in comparison MoTe${}_2$, shows a T${}_c$ of 0.1 K). The experimental and theoretical studies indicate that Re substitution is doping electrons and facilitates the emergence of superconductivity by enhancing the electron-phonon coupling and density of states at the Fermi level. Our findings, therefore, open a new way to further manipulate and enhance the superconducting state together with the topological states in 2D van der Waals materials.

arXiv comment7 Pages, 10 figures

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Cited by in corpus (12)

• Tailoring the Phase Transition and Electron-Phonon Coupling in 1T'-MoTe2 by Charge Doping: A Raman Study
• Generation of strain-induced pseudo-magnetic field in a doped type-II Weyl semimetal
• Angular dependence of the upper critical field in the high-pressure $1T^{\prime }$ phase of MoTe${}_2$
• Superconducting properties of MoTe${}_2$ from the $abinitio$ anisotropic Migdal-Eliashberg theory
• Emergent superconductivity by Re doping in type -II Weyl semimetal NiTe2
• Two Dimensional Multigap Superconductivity in Bulk 2H-TaSSe
• Topological phase transition in MoTe${}_2$: A Review
• Superconductivity in doped Weyl semimetal Mo${}_{0.9}$Ir${}_{0.1}$Te${}_2$ with broken inversion symmetry
• Drastic enhancement of the superconducting temperature in type-II Weyl semimetal candidate MoTe${}_2$ via biaxial strain
• Superconductivity with high upper critical field in Ta-Hf Alloys
• Field induced hysteretic structural phase switching and possible CDW in Re-doped MoTe${}_2$
• Suppression of both superconductivity and structural transition in hole-doped MoTe${}_2$ induced by Ta substitution