Effect of Uniaxial Stress for Pressure-Induced Superconductor SrFe_2As_2

Abstract

We report that the pressure-temperature phase diagram of single-crystalline SrFe${}_2$As${}_2$ is easily affected by the hydrostaticity of a pressure-transmitting medium. For all of the three mediums we used, superconductivity with zero resistance appears, accompanied by the suppression of an antiferromagnetic (orthorhombic) phase, but the critical pressure $P_c$ was found to depend on the type of medium. $P_c$ was estimated to be 4.4 GPa under almost hydrostatic condition, but it decreased to $3.4-3.7$ GPa with the use of the medium already solidified at room temperature. The uniaxial stress along the c-axis is suggested to aid in the suppression of the antiferromagnetic (orthorhombic) phase. The pressure effect of BaFe${}_2$As${}_2$ is also reported.

4 pages, 5 figures, to be published in J. Phys. Soc. Jpn. No.8 (2009)

References in corpus (8)

• Superconductivity at 27 K in tetragonal FeSe under high pressure
• Anisotropic thermodynamic and transport properties of single crystalline (Ba${}_{1-x}$K${}_x$)Fe${}_2$As${}_2$ (x = 0 and 0.45)
• Anisotropy in the electrical resistivity and susceptibility of superconducting BaFe${}_2$As${}_2$ single crystals
• Precise Pressure Dependence of the Superconducting Transition Temperature of FeSe: Resistivity and ^77Se--NMR Study
• Abrupt Emergence of Pressure-Induced Superconductivity of 34 K in SrFe2As2: A Resistivity Study under Pressure
• Suppression of Magnetic Order by Pressure in BaFe2As2
• Pressure-induced superconductivity in Iron pnictide compound SrFe2As2
• Effect of pressure on the magnetostructural transition in SrFe2As2

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