Si, J.; Zhao, J.; Liu, Y.; Liu, Y.; Jin, C.; Liu, J.; Xing, L. The Superconductivity in Bi-Doped BaFe2As2 Single Crystals. Materials2024, 17, 929.
Si, J.; Zhao, J.; Liu, Y.; Liu, Y.; Jin, C.; Liu, J.; Xing, L. The Superconductivity in Bi-Doped BaFe2As2 Single Crystals. Materials 2024, 17, 929.
Si, J.; Zhao, J.; Liu, Y.; Liu, Y.; Jin, C.; Liu, J.; Xing, L. The Superconductivity in Bi-Doped BaFe2As2 Single Crystals. Materials2024, 17, 929.
Si, J.; Zhao, J.; Liu, Y.; Liu, Y.; Jin, C.; Liu, J.; Xing, L. The Superconductivity in Bi-Doped BaFe2As2 Single Crystals. Materials 2024, 17, 929.
Abstract
We have successfully synthesized a series of Bi doped BaFe2As2 high quality single crystals for the first time. The x-ray diffraction (XRD) patterns show an expansion of lattice parameter c with Bi doping, indicating a negative pressure effect. By investigating the resistivity, a Fermi liquid (FL) to non-Fermi liquid (NFL) crossover is observed from normal state to antiferromagnetic order state, accompanied by three superconducting transitions labeled as SC I, SC II and SC III which are supposed to be induced from three superconducting realms with various Bi concentration. Thus, the NFL behavior is proposed to be closely related with the presence of superconductivity. The magnetic susceptibility measurements further speculates that the SC I and SC III phases should be filamentary superconductivity while the SC II be a possible bulk superconductivity with TC 7 K.
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