Transport Properties and Electronic Phase Diagram of Single-Crystalline Ca$_{10}$(Pt$_3$As$_8$) ((Fe$_{1-x}$Pt$_x$)$_2$As$_2$)$_5$

Z. J. Xiang; X. G. Luo; J. J. Ying; X. F. Wang; Y. J. Yan; A. F. Wang; P. Cheng; G. J. Ye; X. H. Chen

doi:10.1103/PhysRevB.85.224527

paper

Transport Properties and Electronic Phase Diagram of Single-Crystalline Ca $_{10}$ (Pt $_{3}$ As $_{8}$ ) ((Fe $_{1 - x}$ Pt $_{x}$ ) $_{2}$ As $_{2}$ ) $_{5}$

arXiv:1203.1486 · doi:10.1103/PhysRevB.85.224527

Abstract

Sizable single-crystalline samples of Ca $_{10}$ (Pt $_{3}$ As $_{8}$ )((Fe $_{1 - x}$ Pt $_{x}$ ) $_{2}$ As $_{2}$ ) $_{5}$ (the 10-3-8 phase) with 0 $\leq x <$ 0.1 have been grown and systematically characterized via X-Ray diffraction, magnetic, and transport measurements. The undoped sample is a heavily doped semiconductor with no sign of magnetic order down to 2 K. With increasing Pt content, the metallic behavior appears and superconductivity is realized for $x \geq$ 0.023. $T_{c}$ rises to its maximum of approximately 13.6 K at the doping level of $x \sim$ 0.06, and then decreases for higher $x$ values. The electronic phase diagram of the 10-3-8 phase was mapped out based on the transport measurements. The mass anisotropy parameter $Γ \sim$ 10 obtained from resistive measurements in magnetic fields indicates a relatively large anisotropy in the iron-based superconductor family. This strong 2D character may lead to the absence of magnetic order. A linear $T$ -dependence of susceptibility at high temperature is observed, indicating that spin fluctuations exist in the underdoped region as in most of the Fe-pnictide superconductors.

9 pages, 7 figures

Transport Properties and Electronic Phase Diagram of Single-Crystalline Ca $_{10}$ (Pt $_{3}$ As $_{8}$ ) ((Fe $_{1 - x}$ Pt $_{x}$ ) $_{2}$ As $_{2}$ ) $_{5}$

Abstract

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Transport Properties and Electronic Phase Diagram of Single-Crystalline Ca10​(Pt3​As8​) ((Fe1−x​Ptx​)2​As2​)5​

Abstract

References in corpus (29)

Cited by in corpus (10)

Transport Properties and Electronic Phase Diagram of Single-Crystalline Ca $_{10}$ (Pt $_{3}$ As $_{8}$ ) ((Fe $_{1 - x}$ Pt $_{x}$ ) $_{2}$ As $_{2}$ ) $_{5}$