Superconductivity and charge density wave in transition metal chalcogenides: A first principle study

Coexistence of superconductivity and charge density wave instability in A15-Nb3Sn

“…It is worth noting that such temperature-dependent instabilities are not unique to Nb 3 Sn, but have also been observed in other high-temperature superconductors. 19–21 These findings suggest a possible connection between CDW instabilities and superconductivity in these materials, which warrants further investigation to elucidate their relationship and underlying mechanisms.…”

“…Furthermore, most high-temperature superconductors exhibit similar signs of CDW instability. 19–22 This leads us to question whether excellent superconducting materials are often accompanied by CDW instabilities, providing a potential avenue for searching for superconducting materials by exploring CDW materials.…”

“…CDW instabilities and their physical effects have been a topic of great interest in condensed matter physics, particularly since their proposal in one-dimensional materials. Due to their highly anisotropic electronic structure and physical properties, many quasi-one-dimensional materials, 23 such as transition metal chalcogenides MXn (M = Nb, Ta, X = S, Se, Te), 19–21,24–26 as well as layered materials like kagome superconductors, 27–29 exhibit CDW instability. Currently, CDW phases can be widely observed in high-temperature superconducting materials.…”