Superconductivity in Nb2Pd3Te5 and Chemically-Doped Ta2Pd3Te5

Abstract

We report on the superconductivity in ternary transition metal tellurides Ta2Pd3Te5 and Nb2Pd3Te5, which have a one-dimensional crystal structure. Single-crystalline and polycrystalline samples of Ta2Pd3Te5 show nonmetallic electron conduction, while Ti or W doping results in metallic behavior with a bulk superconducting transition at 2-4 K. In contrast, the polycrystalline samples of Nb2Pd3Te5, which are found to be isostructural to Ta2Pd3Te5, show a bulk superconducting transition at 3.3 K. The crystal structure and physical properties of Ta2Pd3Te5 and Nb2Pd3Te5 are also discussed in comparison with a candidate excitonic insulator Ta2NiSe5.

arXiv comment8 pages, 11 figures, J. Phys. Soc. Jpn., in press

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Cited by in corpus (10)

• Quadrupole topological insulators in Ta2M3Te5 (M= Ni, Pd) monolayers
• A robust and tunable Luttinger liquid in correlated edge of transition-metal second-order topological insulator Ta${}_2$Pd${}_3$Te${}_5$
• Spontaneous gap opening and potential excitonic states in an ideal Dirac semimetal Ta${}_2$Pd${}_3$Te${}_5$
• Interfering Josephson diode effect in Ta2Pd3Te5 asymmetric edge interferometer
• Pressure-induced nontrivial $Z_2$ band topology and superconductivity in transition metal chalcogenide ${\mathrm{Ta}}_2{\mathrm{Ni}}_3{\mathrm{Te}}_5$
• Dirac surface states, multiorbital dimerization and superconductivity in Nb- and Ta-based A15 compounds
• Excitonic Instability in Ta2Pd3Te5 Monolayer
• Weak antilocalization in the transition metal telluride Ta${}_2$Pd${}_3$Te${}_5$
• Superconductivity in Ternary Zirconium Telluride Zr6MTe2 with 3d Transition Metals
• Realization of Air-Stable Two-Dimensional Superconductor Nb2Pd3Te5 With Quasi-One-Dimensional Pair Density Modulation