Physics – Condensed Matter – Superconductivity
Scientific paper
2008-07-07
Physics
Condensed Matter
Superconductivity
Scientific paper
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, $H_{c2}(T)$, shifts down in temperature to follow the zero field $T_c$ with very little change in slope.
Bud'ko Sergey L.
Canfield Paul. C.
Ni Nan
Torikachvili Milton S.
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