Extended Magnetic Dome Induced by Low Pressures in Superconducting FeSe1-x Sx
- Holenstein, S.
- Stahl, J.
- Shermadini, Z.
- Simutis, G.
- Grinenko, V.
- Chareev, D. A.
- Khasanov, R.
- Orain, J. -C.
- Amato, A.
- Klauss, H. -H.
- Morenzoni, E.
- Johrendt, D.
- Luetkens, H.
DOIAbstract
We report muon spin rotation and magnetization measurements under pressure on Fe1+δSe1-xSx with x≈0.11. Above p≈0.6 GPa we find a microscopic coexistence of superconductivity with an extended dome of long range magnetic order that spans a pressure range between previously reported separated magnetic phases. The magnetism initially competes on an atomic scale with the coexisting superconductivity leading to a local maximum and minimum of the superconducting Tc(p). The maximum of Tc corresponds to the onset of magnetism while the minimum coincides with the pressure of strongest competition. A shift of the maximum of Tc(p) for a series of single crystals with x up to 0.14 roughly extrapolates to a putative magnetic and superconducting state at...
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