Anisotropy of the Upper Critical Field in Superconductors with Anisotropic Gaps: Anisotropy Parameters of MgB2
Anisotropy of the Upper Critical Field in Superconductors with Anisotropic Gaps: Anisotropy Parameters of MgB2
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各向异性间隙超导体上临界场的各向异性：MgB2 的各向异性参数
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
V. G. Kogan
中科院分区：
文献类型：
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作者：
P. Miranović;K. Machida;V. G. Kogan
计算了弱耦合两带各向异性超导体的上临界场Hc2。用两个平均参数与实际材料相同的费米面球体模拟了MgB2的实际能带和能隙分布，结果表明Hc2，ab/Hc2，c随温度的降低而增大，与已有数据一致。
The upper critical field H c 2 is evaluated for weakly-coupled two-band anisotropic superconductors. By modeling the actual bands and the gap distribution of MgB 2 by two Fermi surface spheroids with average parameters of the real material, we show that H c 2, a b / H c 2, c increases with decreasing temperature in agreement with available data.