Nearly isotropic upper critical fields in a SrFe$_{1.85}$Co$_{0.15}$As$_{2}$ single crystal

Seunghyun Khim; Jun Sung Kim; Jae Wook Kim; Suk Ho Lee; F. F. Balakirev; Yunkyu Bang; Kee Hoon Kim

doi:10.1016/j.physc.2009.11.060

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arXiv · 1001.4310

Nearly isotropic upper critical fields in a SrFe$_{1.85}$Co$_{0.15}$As$_{2}$ single crystal

Seunghyun Khim·Jun Sung Kim·Jae Wook Kim·Suk Ho Lee·F. F. Balakirev·Yunkyu Bang·Kee Hoon Kim

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Abstract

We study temperature dependent upper critical field $H_{\rm c2}$ of a SrFe$_{1.85}$Co$_{0.15}$As$_{2}$ single crystal (\textit{T$_c$}=20.2 K) along \textit{ab}-plane and \textit{c}-axis through resistivity measurements up to 50 T. For the both crystalline directions, $H_{\rm c2}$ becomes nearly isotropic at zero temperature limit, reaching $\sim$ 48 T. The temperature dependence of the $H_{\rm c2}$ curves is explained by interplay between orbital and Pauli limiting behaviors combined with the two band effects.

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Seunghyun Khim, Jun Sung Kim, Jae Wook Kim, Suk Ho Lee, F. F. Balakirev, Yunkyu Bang, Kee Hoon Kim. 2010-01-25. Nearly isotropic upper critical fields in a SrFe$_{1.85}$Co$_{0.15}$As$_{2}$ single crystal. https://doi.org/10.1016/j.physc.2009.11.060

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