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The effect of S doping on the superconductivity and nematicity transition of FeSe

Journal Article


Abstract


  • In this work, the superconducting properties of FeSe1���xSx with 0 ��� x ��� 0.5 were studied. With S doping, Tc is enhanced and shows a dome shape in the studied composition range. XRD measurements demonstrate that S substituting Se sites introduces positive chemical pressure, which can suppress the orbital ordering, manifesting as the decrease of Ts. Hall measurements demonstrate that S doping can effectively tune the charge carriers and make hole-type carriers predominant. However, no maxing Tc is obtained as Ts vanishes in FeSe0.7S0.3, indicating the nematic order has no universal influence on the superconductivity of FeSe system.

Publication Date


  • 2020

Citation


  • Ma, Q., Lan, F., Li, X., Du, Z., Li, H., & Ma, Z. (2020). The effect of S doping on the superconductivity and nematicity transition of FeSe. Scripta Materialia, 176, 88-93. doi:10.1016/j.scriptamat.2019.09.010

Scopus Eid


  • 2-s2.0-85072962259

Start Page


  • 88

End Page


  • 93

Volume


  • 176

Issue


Place Of Publication


Abstract


  • In this work, the superconducting properties of FeSe1���xSx with 0 ��� x ��� 0.5 were studied. With S doping, Tc is enhanced and shows a dome shape in the studied composition range. XRD measurements demonstrate that S substituting Se sites introduces positive chemical pressure, which can suppress the orbital ordering, manifesting as the decrease of Ts. Hall measurements demonstrate that S doping can effectively tune the charge carriers and make hole-type carriers predominant. However, no maxing Tc is obtained as Ts vanishes in FeSe0.7S0.3, indicating the nematic order has no universal influence on the superconductivity of FeSe system.

Publication Date


  • 2020

Citation


  • Ma, Q., Lan, F., Li, X., Du, Z., Li, H., & Ma, Z. (2020). The effect of S doping on the superconductivity and nematicity transition of FeSe. Scripta Materialia, 176, 88-93. doi:10.1016/j.scriptamat.2019.09.010

Scopus Eid


  • 2-s2.0-85072962259

Start Page


  • 88

End Page


  • 93

Volume


  • 176

Issue


Place Of Publication