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arXiv 2002.00016cond-mat.supr-concond-mat.str-el
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协调Sr2RuO4超导态实验的建议

A proposal for reconciling diverse experiments on the superconducting state in Sr2RuO4

Steven A. Kivelson, Andrew C. Yuan, B. J. Ramshaw, Ronny Thomale

摘要:

为了确定Sr2RuO4超导态的特征,人们进行了各种精确的实验。其中许多似乎暗示着关于这种状态的对称性的矛盾结论。在这里,我们建议,这些结果可以调和,如果我们假设有一个近简并之间的d_{x^2-y^2}(B_{1g}在群论命名)和g_{xy(x^2-y^2)}(A_{2g})超导状态。从弱耦合的角度来看,这种偶然的简并可以发生在一个点上,在该点上,在现场和最近邻排斥之间的平衡触发了d波到g波的转变。

英文摘要:

A variety of precise experiments have been carried out to establish the character of the superconducting state in Sr2RuO4. Many of these appear to imply contradictory conclusions concerning the symmetries of this state. Here, we propose that these results can be reconciled if we assume that there is a near-degeneracy between a d_{x^2-y^2} (B_{1g} in group theory nomenclature) and a g_{xy(x^2-y^2)} (A_{2g}) superconducting state. From a weak-coupling perspective, such an accidental degeneracy can occur at a point at which a balance between the on-site and nearest-neighbor repulsions triggers a d-wave to g-wave transition.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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