Anomalous Charge Density Wave State Evolution and Dome-like Superconductivity in CuIr2Te4-xSex Chalcogenides

Abstract

We report the anomalous charge density wave (CDW) state evolution and dome-like superconductivity (SC) in CuIr2Te4-xSex series. Room temperature powder X ray-diffraction (PXRD) results indicate that CuIr2Te4-xSex compounds retain the same structure as the host CuIr2Te4 and the unit cell constants a and c manifest a linear decline with increasing Se content. Magnetization, resistivity and heat capacity results suggest that superconducting transition temperature (Tc) exhibits a weak dome-like variation as substituting Te by Se with the maximum Tc = 2.83 K for x = 0.1 followed by suppression in Tc and simultaneous decrease of the superconducting volume fraction. Unexpectedly, the CDW-like transition (TCDW) is suppressed with lower Se doping but re-emerges at higher doping. Meanwhile, the temperature-dependent XRD measurements show that the trigonal structure is stable at 20 K, 100 K and 300 K for the host sample and the doping composition with x = 0.5, thus we propose that the behaviour CDW-like transition arises from the disorder effect created by chemical doping and is not related to structural transition. The lower and the upper critical fields of these compounds are also addressed.

The manuscript with the same title will be published by Superconductor Science and Technology, 2021

References in corpus (29)

• Superconductivity in Cu_xTiSe_2
• Topological superconductivity in monolayer transition metal dichalcogenides
• Gate tuning of electronic phase transitions in two-dimensional NbSe${}_2$
• Pressure induced effects on the Fermi surface of superconducting 2H-NbSe${}_2$
• Polytypism, polymorphism and superconductivity in TaSe2-xTex
• Patterns and driving forces of dimensionality-dependent charge density waves in 2H-type transition metal dichalcogenides
• Nature of charge density waves and superconductivity in 1\emph{T}-TaSe${}_{2-x}$Te${}_x$
• Disorder suppressed charge-density-wave and its origin in 1T-TaSe2-xTex
• Type I superconductivity in the Dirac semimetal PdTe2
• One-Dimensional Edge Transport in Few-Layer WTe${}_2$
• Superconductivity in Cu${}_x$IrTe${}_2$ induced by interlayer hybridization
• Mott metal-insulator transitions in pressurized layered trichalcogenides
• Origin of the phase transition in IrTe2: structural modulation and local bonding instability
• Coexistence of superconductivity and charge-density wave in the quasi-one-dimensional material HfTe3
• Coexistence of gapless excitations and commensurate charge-density wave in the 2H-transition metal dichalcogenides
• Nodeless superconductivity in type-II Dirac semimetal PdTe2: low-temperature London penetration depth and symmetry analysis
• Enhancement of the in-field Jc of MgB2 via SiCl4 doping
• Effect of Selenium doping on the superconductivity of Nb${}_2$Pd(S${}_{1-x}$Se${}_x$)${}_5$
• Suppression of Structural Phase Transition in IrTe2 by Isovalent Rh Doping
• Superconductivity Induced by Breaking Te2 Dimers of AuTe2
• Disorder quenching of the Charge Density Wave in ZrTe3
• Superconductivity in the Cu(Ir1-xPtx)2Se4 Spinel
• New polymorphic phase and rich phase diagram in the PdSe2-xTex system
• Enhanced Superconductivity in the Se-substituted 1T-PdTe${}_2$
• Superconductivity in the Ru-Doped CuIr2Te4 Telluride Chalcogenide
• Strong magnetoresistance of disordered graphene
• Platform for nodal topological superconductors in monolayer molybdenum dichalcogenides
• CuIr2Te4: A Quasi-Two-Dimensional Ternary Telluride Chalcogenide Superconductor
• Charge density wave and superconductivity in the family of telluride chalcogenides Zn1-xCuxIr2-yN(N = Al, Ti, Rh)yTe4

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