2021/10/28 by E. I. Paredes Aulestia, Esteban I. Paredes Aulestia, Xinyou Liu +5 · 2 citations
Materials Science · Physics and Astronomy · #Charge density wave #Condensed matter physics #Cuprate #Electrical resistivity and conductivity #Instability #Iron-based superconductors research #Materials science #Pairing #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Superconducting transition temperature #Superconductivity #Transition temperature #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1088/1361-648x/ac34af
published in Journal of Physics Condensed Matter 34(6), 06LT01 (IOP Publishing) · 8 pages, 4 figures. This is the first draft of an accepted paper by J. Phys. Condens. Matter
arxiv created 2021/10/28 · openalex publication_date 2021/10/29 · arxiv updated 2021/12/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract Charge density wave (CDW) instability is often found in phase diagrams of superconductors such as cuprates and certain transition-metal dichalcogenides. This proximity to superconductivity triggers the question on whether CDW instability is responsible for the pairing of electrons in these superconductors. However, this issue remains unclear and new systems are desired to provide a better picture. Here, we report the temperature–pressure phase diagram of a recently discovered BiS 2 superconductor La 2 O 2 Bi 3 AgS 6 , which shows a possible CDW transition at T * ∼ 155 K and a superconducting transition at T c ∼ 1.0 K at ambient pressure, via electrical resistivity measurements. Upon applying pressure, T * decreases linearly and extrapolates to 0 K at 3.9 GPa. Meanwhile, T c is enhanced and reaches maximum value of 4.1 K at 3.1 GPa, forming a superconducting dome in the temperature–pressure phase diagram.