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arXiv 1306.5027cond-mat.supr-con
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Specific Heat和Sc5Ir4Si10超导体的上临界场

Specific Heat and Upper Critical Field of Sc5Ir4Si10 Superconductor

Yue Sun, Yi Ding, Dongmei Gu, Jinchen Zhuang, Zhixiang Shi, Tsuyoshi Tamegai

摘要:

详细研究了织构Sc_5Ir_4Si_(10)超导体的比热随温度和磁场的变化。通过对零场电子比热随不同能隙结构的拟合以及场致比热系数的讨论,证明了Sc_(5Ir)_(4Si_(10))是一种各向异性s波超导体,能隙各向异性为0.53。上临界场的各向异性反映了弱一维费米面,其值与由比热数据得到的能隙各向异性结果一致。

英文摘要:

Temperature and magnetic field dependent specific heat of textured Sc5Ir4Si10 superconductor was investigated in detail. Based on the fitting of zero-field electronic specific heat by different gap structures as well as the discussion on field-induced specific heat coefficient, Sc5Ir4Si10 is proved to be an anisotropic s-wave superconductor with a gap anisotropy of 0.53. The anisotropy of upper critical field suggests the weakly one-dimensional Fermi surface, and the value is consistent with the gap anisotropy result obtained from the specific heat data.

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