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

paper

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

arXiv:1001.4310 · doi:10.1016/j.physc.2009.11.060

Abstract

We study temperature dependent upper critical field $H_{c2}$ 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, $H_{c2}$ becomes nearly isotropic at zero temperature limit, reaching $\sim$ 48 T. The temperature dependence of the $H_{c2}$ curves is explained by interplay between orbital and Pauli limiting behaviors combined with the two band effects.

Proceedings of M2S-IX, Tokyo 2009

Nearly isotropic upper critical fields in a SrFe1.85​Co0.15​As2​ single crystal

Abstract

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