Qian Tao

Superconductivity Induced by Phosphorus Doping and Its Coexistence with Ferromagnetism in EuFe2(As0.7P0.3)2

We have studied EuFe2(As0.7P0.3)(2) by the measurements of x-ray diffraction, electrical resistivity, thermopower, magnetic susceptibility, magnetoresistance, and specific heat. Partial substitution of As with P results in the shrinkage of lattice, which generates chemical pressure to the system. It is found that EuFe2(As0.7P0.3)(2) undergoes a superconducting transition at 26 K, followed by ferromagnetic ordering of Eu2+ moments at 20 K. This finding is the first observation of superconductivity stabilized by internal chemical pressure, and supplies a rare example showing the coexistence of superconductivity and ferromagnetism in the ferroarsenide family.

Superconductivity induced by La doping in Sr1−xLaxFBiS2

Through a combination of x-ray diffraction, electrical transport, magnetic susceptibility, and heat-capacity measurements, we report the effect of La doping on Sr in the newly discovered SrFBiS

Antiferromagnetic transition in EuFe2As2: a possible parent compound for superconductors

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Effects of cobalt doping and phase diagrams of LFe1-xCox AsO (L=La and Sm)

system. Superconducting transition with critical temperature T

Superconductivity in LaFeAs1-xPxO: effect of chemical pressures and bond covalency

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Metamagnetic transition in EuFe2As2 single crystals

of 2.8 K, developed from a semiconducting-like normal state, was found in Sr

Possible charge-density wave, superconductivity, andf-electron valence instability inEuBiS2F

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Ba2Ti2Fe2As4O: A New Superconductor Containing Fe2As2 Layers and Ti2O Sheets

La

Anomalous Eu Valence State and Superconductivity in Undoped Eu3Bi2S4F4

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Metamagnetic transition in EuFe 2 As 2 single crystals

FBiS