English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

Based on a combination of X-ray diffraction, electrical transports, magneticsusceptibility, specific heat and pressure effect measurements, we report aseries of BiS$_{2}$-based Sr$_{1-x}$Pr$_{x}$FBiS$_{2}$ superconductors with themaximum $T_c$ of 2.7 K for $x =$ 0.5 at ambient pressure. Superconductivity canbe only observed at 0.4 $\leq$ x $\leq$ 0.7 while the normal state resistivityshows the semiconducting-like behaviors. $\chi(T)$ displays the lowsuperconducting shielding volume fractions and $C(T)$ does not exhibitdistinguishable anomaly around $T_c$, suggesting a filamentarysuperconductivity in the Pr-doped polycrystalline samples. By varying dopingconcentrations, an electrnoic phase diagram can thus be established. Uponapplying pressure on the optimal doping Sr$_{0.5}$Pr$_{0.5}$FBiS$_{2}$ system,$T_c$ is abruptly enhanced, reaches 8.5 K at a critical pressure of $P_c =$ 1.5GPa and remains a slight increase up to 9.7 K up to 2.5 GPa. Accompanied withthe enhancement of superconductivity from the low-$T_c$ phase to the high-$T_c$phase, the normal state undergoes a semiconductor-to-metal transition underpressure. The scenario can be linked to the enhancement of orbital overlap ofBi-6p and S-p, contributing to the bulk superconductivity above $P_c$. Phasediagram for Sr$_{0.5}$Pr$_{0.5}$FBiS$_{2}$ is also obtained.

Superconductivity, Electronic Phase Diagram and Pressure Effect in Sr_{1-x}Pr_{x}FBiS_{2}