Effect of pressure on the structural phase transition and superconductivity in (Ba$_{1-x}$K$_x$)Fe$_2$As$_2$ ($x = 0$ and 0.45) single crystals

M. S. Torikachvili; N. Ni; S. L. Bud'ko; P. C. Canfield

paper

Effect of pressure on the structural phase transition and superconductivity in (Ba $_{1 - x}$ K $_{x}$ )Fe $_{2}$ As $_{2}$ ( $x = 0$ and 0.45) single crystals

arXiv:0807.1089

Abstract

The effects of pressure up to $\sim 20$ kbar, on the structural phase transition of lightly Sn-doped BaFe $_{2}$ As $_{2}$ , as well as on the superconducting transition temperature and upper critical field of (Ba $_{0.55}$ K $_{0.45}$ )Fe $_{2}$ As $_{2}$ single crystals have been studied. Both transitions decrease with pressure in an almost linear fashion. Under pressure, the upper critical field curve, $H_{c 2} (T)$ , shifts down in temperature to follow the zero field $T_{c}$ with very little change in slope.

Effect of pressure on the structural phase transition and superconductivity in (Ba1−x​Kx​)Fe2​As2​ (x=0 and 0.45) single crystals

Abstract

Effect of pressure on the structural phase transition and superconductivity in (Ba $_{1 - x}$ K $_{x}$ )Fe $_{2}$ As $_{2}$ ( $x = 0$ and 0.45) single crystals