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

Kenji Ishida; Lina E. Klintberg; Michael Sutherland; Shigeru Kasahara; Swee K. Goh; Takahito Terashima; Takasada Shibauchi; Yuji Matsuda; Yusuke Nakai

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

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arxiv 1009.2716 v2 pith:TMKFV263 submitted 2010-09-14 cond-mat.supr-con cond-mat.str-el

Lina E. Klintberg , Swee K. Goh , Shigeru Kasahara , Yusuke Nakai , Kenji Ishida , Michael Sutherland , Takasada Shibauchi , Yuji Matsuda

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Takahito Terashima

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classification cond-mat.supr-concond-mat.str-el

keywords pressurebafephosphorousdependencesubstitutionphysicalsuperconductingbulk

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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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