Unusual behavior of superconductivity induced by anisotropic structure in the ferromagnetic state

Unusual behavior of superconductivity induced by anisotropic structure in the ferromagnetic state
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铁磁态各向异性结构引起的超导异常行为

DOI:
10.1209/epl/i2005-10495-1
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发表时间:
2006-04
期刊:
EPL
影响因子:
1.8
通讯作者:
--
中科院分区:
物理与天体物理4区
文献类型:
--
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我们发现,在p波类bcs平均场理论的框架内,如果考虑结构的各向异性和电子占据数的适当选择,我们仍然可以容忍最近发现的铁磁性和超导性共存。此外,在一般情况下,只有一种自旋方向与磁化方向平行的电子可以配对。因此,即使在零温度下,系统也能保持正常的类费米液体状态,这得到了比热实验测量的支持。
We find that the coexistence of ferromagnetism and superconductivity discovered recently can still be tolerated within the framework of the p-wave BCS-like mean-field theory if the structural anisotropy and the proper choice of the electronic occupation number are considered. Furthermore, only one type of electrons, in which the spin orientations are parallel to the direction of magnetization, can be paired in the general case. Thus the system keeps normal Fermi-liquid-like even at zero temperature, and it is supported by the experimental measurements on the specific heat.
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