Chemical Pressure and Physical Pressure in BaFe_2(As_{1-x}P_{x})_2

Details Chemical Pressure and Physical Pressure in BaFe_2(As_{1-x}P_{x})_2 Chemical Pressure and Physical Pressure in BaFe_2(As_{1-x}P_{x})_2

2010-09-14

arxiv.org/abs/1009.2716v2

J. Phys. Soc. Jpn. 79, 123706 (2010)

Physics

Condensed Matter

Superconductivity

5 pages, 4 figures, to be published in Journal of the Physical Society of Japan

Scientific paper

10.1143/JPSJ.79.123706

Measurements of the superconducting transition temperature, T_c, under hydrostatic pressure via bulk AC susceptibility were carried out on several concentrations of phosphorous substitution in BaFe_2(As_{1-x}P_x)_2. The pressure dependence of unsubstituted BaFe_2As_2, phosphorous concentration dependence of BaFe_2(As_{1-x}P_x)_2, as well as the pressure dependence of BaFe_2(As_{1-x}P_x)_2 all point towards an identical maximum T_c of 31 K. This demonstrates that phosphorous substitution and physical pressure result in similar superconducting phase diagrams, and that phosphorous substitution does not induce substantial impurity scattering.

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