Photo from academic.microsoft.com
We grew a series of NaFe1−x V x As (0 ≤ x ≤ 0.03) single crystals and performed the measurements of resistance, magnetic susceptibility, and specific heat to study the… Click to show full abstract
We grew a series of NaFe1−x V x As (0 ≤ x ≤ 0.03) single crystals and performed the measurements of resistance, magnetic susceptibility, and specific heat to study the superconducting phase diagram by doping V into NaFeAs. Both the structural and the spin-density-wave (SDW) transitions are slightly suppressed by V-doping. While superconducting transition temperature is enhanced to the maximum value of ∼ 15 K when the optimal doping level x = 0.007 and then is suppressed rapidly with further V-doping, displaying a small superconducting dome. Our results suggest that V-impurities should act as strong magnetic scattering centers which cause the sharp suppression of superconductivity in NaFe1−x V x As.
Journal Title: Chinese Physics B
Year Published: 2020
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!