CONVENTIONAL MECHANISMS FOR EXOTIC SUPERCONDUCTIVITY
CONVENTIONAL MECHANISMS FOR EXOTIC SUPERCONDUCTIVITY
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DOI：
10.1103/physrevb.60.14868
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发表时间：
1999-06
影响因子：
3.7
通讯作者：
Daniel Agterberg;V. Barzykin;L. Gor’kov;L. Gor’kov
中科院分区：
文献类型：
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作者：
Daniel Agterberg;V. Barzykin;L. Gor’kov;L. Gor’kov
我们考虑由于立方体和六角形对称性物质中通常的BCS机制导致的配对态，其中费米面在几个高度对称性的点周围形成口袋。我们发现，施加在多个口袋位置上的对称性可以产生一个多维非平凡的超导序参数。对态中的时间反转对称性被打破。我们提出了几种可能出现这种有序化的候选物质，并讨论了识别这种相的方法。
We consider the pairing state due to the usual BCS mechanism in substances of cubic and hexagonal symmetry where the Fermi surface forms pockets around several points of high symmetry. We find that the symmetry imposed on the multiple pocket positions could give rise to a multidimensional nontrivial superconducting order parameter. The time-reversal symmetry in the pairing state is broken. We suggest several candidate substances where such ordering may appear, and discuss means by which such a phase may be identified.