Superconductivity in Magnetically Ordered CeTe${}_{1.82}$

Abstract

We report the discovery of pressure-induced superconductivity in a semimetallic magnetic material CeTe${}_{1.82}$. The superconducting transition temperature $T_{SC}$ = 2.7 K (well below the magnetic ordering temperatures) under pressure ($>$ 2 kbar) is remarkably high, considering the relatively low carrier density due to a charge-density-wave transition associated with lattice modulation. The coexisting magnetic structure of a mixed ferromagnetism and antiferromagnetism can provide a clue for this high $T_{SC}$. We discuss a theoretical model for its possible pairing symmetry and pairing mechanism.

arXiv comment13 pages, including 4 figures

References in corpus (4)

• CDW, Superconductivity and Anomalous Metallic Behavior in 2D Transition Metal Dichalcogenides
• Superconductivity near Itinerant Ferromagnetic Quantum Criticality
• Effect of Ferromagnetic Spin Correlations on Superconductivity in Ferromagnetic Metals
• Pressure Dependence of the Irreversibility Line in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$:Role of Anisotropy in Flux-Line Formation

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• Pressure dependence of the optical properties of the charge-density-wave compound LaTe${}_2$
• Optical properties of the charge-density-wave polychalcogenide compounds $R_2$Te${}_5$ ($R$=Nd, Sm and Gd)
• Effect of disorder in the charge-density-wave compounds LaTe${}_{1.95}$ and CeTe${}_{1.95-x}$Se${}_x$ (x=0 and 0.16) as revealed by optical spectroscopy
• Supercell formation in epitaxial rare-earth ditelluride thin films
• Observation of momentum-dependent charge density wave gap in a layered antiferromagnet GdTe3
• Probing the Band Structure of LaTe_2 Using Angle Resolved Photoemission Spectroscopy