Abstract FeSe₁-ₗ Sₗ FeSe 1 - x S x is known to have a characteristic phase diagram where superconducting (SC), nematic and antiferromagnetic (AFM) phases coexist or compete to each other. We report single crystal growth of FeSe₁-ₗ Sₗ FeSe 1 - x S x and pressure effect on superconductivity for the specimens with x =0. 02 through the measurements of DC magnetization (M) and electrical resistivity (ρ) as a function of temperature (T). Single crystals of FeSe₁-ₗ Sₗ FeSe 1 - x S x (x 0. 17 x ≤ 0. 17) with a maximum dimension of 1. 5 × 1. 5 mm² mm 2 were successfully obtained by a chemical vapor transport method. The M (T) and ρ (T) measurements have revealed that a nematic phase is suppressed and disappears at ∼ 1. 5 GPa, where superconducting transition temperature T₂ T c shows a local minimum, while AFM phases appear separately inside and outside the nematic phase. A crossover of superconductivity near the end point of AFM phase reported in our previous study for x 0. 04 x ≥ 0. 04 was not observed for x =0. 02.
Miyoshi et al. (Sun,) studied this question.