Coexistence of superconductivity and charge-density wave in the quasi-one-dimensional material HfTe3

Abstract

We present the first experimental evidence for metallicity, superconductivity (SC) and the co-existence of charge density waves (CDW) in the quasi-one-dimensional material HfTe3. The existence of such phenomena is a typical characteristic of the transition metal chalcogenides however, without the application of hydrostatic pressure/chemical doping, it is rare for a material to exhibit the co-existence of both states. Materials such as HfTe3 can therefore provide us with a unique insight into the relationship between these multiple ordered states. By improving on the original synthesis conditions, we have successfully synthesised single phase HfTe3 and confirmed the resultant structure by performing Rietveld refinement. Using low temperature resistivity measurements, we provide the first experimental evidence of SC at ~1.4 K as well as a resistive anomaly indicative of a CDW formation at ~82 K. By the application of hydrostatic-pressure, the resistivity anomaly shifts to higher temperature. The results show that HfTe3 is a promising new material to help study the relationship between SC and CDW.

9 pages, 4 figures, includes supplementary information

References in corpus (3)

• Coexistence of bulk superconductivity and charge density wave in CuxZrTe3
• Raising Tc in charge density wave superconductor ZrTe3 by Ni intercalation
• Spontaneous Formation of a Superconductor-Topological Insulator-Normal Metal Layered Heterostructure

Cited by in corpus (5)

• Metal-insulator transition in quasi-one-dimensional HfTe3 in the few-chain limit
• Thermal transport and mixed valence in ZrTe${}_3$ doped with Hf and Se
• Detailed Electronic Structure of the Three-Dimensional Fermi Surface and its Sensitivity to Charge Density Wave Transition in ZrTe3 Revealed by High Resolution Laser-Based Angle-Resolved Photoemission Spectroscopy
• Anomalous Charge Density Wave State Evolution and Dome-like Superconductivity in CuIr2Te4-xSex Chalcogenides
• Holographic striped superconductor