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Article Dans Une Revue Solid State Communications Année : 2014

Surface Impedance in the antiferromagnetic and superconducting states of underdoped BaFe1.93Ni0.07As2 crystals

Résumé

Measurements of the real R and imaginary X parts of the surface impedance were performed inunderdoped BaFe1.93Ni0.07 As2 crystals in the frequency range 10 MHz-1.5 GHz. The establishment of the antiferromagnetic order at TN ~50K gives rise to anomalous increase of electron scattering time. Drude type conductivity yields X and R differ from each other. The increase of the real conductivity in the superconducting state is attributed to a rapidly decrease of the quasiparticle scattering time. This result gives evidence of coexistence of superconductivity and antiferromagnetism.
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Dates et versions

hal-01003495 , version 1 (10-06-2014)

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Michel Saint-Paul, Christophe Guttin, Abdellatif Abbassi, Zhao-Sheng Wang, Huiqian Luo, et al.. Surface Impedance in the antiferromagnetic and superconducting states of underdoped BaFe1.93Ni0.07As2 crystals. Solid State Communications, 2014, 192, pp.47-50. ⟨10.1016/j.ssc.2014.05.009⟩. ⟨hal-01003495⟩

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