Transport Properties of the Iron-based Superconductor SrFe2(As,P)2 in High Magnetic Fields
Transport Properties of the Iron-based Superconductor SrFe2(As,P)2 in High Magnetic Fields
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DOI：
10.1007/s10909-012-0769-2
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发表时间：
2013-03
影响因子：
2
通讯作者：
T. Kida;Tatsuo C. Kobayashi;S. Miyasaka;S. Tajima;M. Hagiwara
中科院分区：
文献类型：
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作者：
T. Kida;Tatsuo C. Kobayashi;S. Miyasaka;S. Tajima;M. Hagiwara
我们研究了铁基超导体SrFe2(As1−xPx)2（x=0.35,Tc ~ 29 K）在高达52 t的脉冲高磁场下的电阻性上临界场（μ0Hc2）。ForH∥实验室显示了werthmer - helfand - hohenberg （WHH）类行为。而对于h∥c，几乎与地面呈线性关系，在c附近呈现轻微的向上曲率。μ 0hc2的各向异性从2.5 at =0 K单调降低到~ 1.2 atT=0 K。μ 0hc2在Fe1+δ(Te,Se)中也有类似的低温各向同性行为。我们在样品上证明了μ 0hc2 (T)的双波段分析结果，并通过与某些铁基超导体的各向异性进行比较，讨论了μ 0hc2的各向异性。
We have investigated the resistive upper critical field (μ0Hc2) of the iron-based superconductor SrFe2(As1−xPx)2(x=0.35,Tc∼29 K) in pulsed high magnetic fields of up to 52 T. ForH∥ab,exhibits the Werthamer-Helfand-Hohenberg (WHH) like behavior. While, forH∥c,is almost linear againstTand exhibits a slightly upward curvature nearTc. The anisotropy ofμ0Hc2decreases from 2.5 nearTcto ∼1.2 atT=0 K monotonically. Similar isotropic behavior ofμ0Hc2at low temperatures has also been observed in the Fe1+δ(Te,Se). We demonstrate the results of the two-band analysis forμ0Hc2(T) on the present sample and discuss the anisotropy ofμ0Hc2by comparing with those in some kinds of iron-based superconductors.