Pressure-induced enhancement of the superconducting transition temperature in La2O2Bi3AgS6

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^{\ast }\sim$155 K and a superconducting transition at $T_c\sim$1.0 K at ambient pressure, via electrical resistivity measurements. Upon applying pressure, $T^{\ast }$ 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.

8 pages, 4 figures. This is the first draft of an accepted paper by J. Phys. Condens. Matter

References in corpus (16)

• Quantum Criticality in Heavy Fermion Metals
• Theory of Intertwined Orders in High Temperature Superconductors
• CsV${}_3$Sb${}_5$: a ${\mathbb{Z}}_2$ topological kagome metal with a superconducting ground state
• Double superconducting dome and triple enhancement of Tc in the kagome superconductor CsV3Sb5 under high pressure
• Coexistence of the spin-density-wave and superconductivity in the (Ba,K)Fe2As2
• Interplay between charge order and superconductivity in the kagome metal KV${}_3$Sb${}_5$
• Charge-density wave, superconductivity and $f$-electron valence instability in EuBiS${}_2$F
• Incommensurate spin-density wave order in electron-doped BaFe2As2 superconductors
• Quantum Oscillations in Hole-Doped Cuprates
• Coexistence and competition of the short-range incommensurate antiferromagnetic order with superconductivity in BaFe2-xNixAs2
• Ambient Pressure Structural Quantum Critical Point in the Phase Diagram of (Ca${}_x$Sr${}_{1-x}$)${}_3$Rh${}_4$Sn${}_{13}$
• Anomalous Eu Valence State and Superconductivity in Undoped Eu3Bi2S4F4
• Stabilization of high-Tc phase of BiS2-based superconductor LaO0.5F0.5BiS2 using high-pressure synthesis
• Quantum critical point for stripe order: An organizing principle of cuprate superconductivity
• Synthesis, Crystal Structure, and Physical Properties of New Layered Oxychalcogenide La2O2Bi3AgS6
• Stabilization of antiferromagnetism in 1T-Fe${}_{0.05}$TaS${}_2$

Cited by in corpus (2)

• Tiny Sc allows the chains to rattle: Impact of Lu and Y doping on the charge density wave in ScV${}_6$Sn${}_6$
• Evaluation of insulating behavior by Pb Substitution and Pressure-Induced Superconductivity in La2O2Bi3-xPb1+xS6