Doping dependence of the specific heat of single crystal BaFe2(As1-xPx)2

Details Doping dependence of the specific heat of single crystal BaFe2(As1-xPx)2 Doping dependence of the specific heat of single crystal BaFe2(As1-xPx)2

2011-10-13

arxiv.org/abs/1110.3075v1

Physics

Condensed Matter

Superconductivity

20 pages, 5 figures, one table

Scientific paper

We present specific heat measurements on a series of BaFe2(As1-xPx)2 single crystals with phosphorous doping ranging from x = 0.3 to 0.55. Our results reveal that BaFe2(As1-xPx)2 follows the scaling Delta_C/Tc ~ Tc^2 remarkably well. The clean-limit nature of this material imposes new restraints on theories aimed at explaining the scaling. Furthermore, we find that the Ginzburg-Landau parameter decreases significantly with doping whereas the superconducting anisotropy is gamma~2.6, independent of doping.

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