Development of New Theory for Fermi Superfluidity

我们发展了一个由临界价涨落引起的超导电性理论，表明该理论以统一的方式解释了现有的实验结果。这表明临界价态涨落在Ce和Yb基重费米子金属中起着重要的作用。我们发现量子临界价态跃迁表现出新普适类的非费米液体行为，这为理解诸如YbRh_2Si_2和YbRh_2Si_3等非传统非费米液体行为提供了基础。YbAlB_4。解决了奇频超导中的负迈斯纳效应悖论，使奇频超导从强关联电子系统的怀疑气氛中释放出来，是一个重大的成功。

We have developed a theory of superconductivity due to the critical valence fluctuations, showing that the theory explains existing experimental results in a unified way. This implies that the critical valence fluctuations play the important role in Ce-and Yb-based heavy fermion metals. We found that the quantum critical valence transition exhibit non-Fermi liquid behaviors of new universality class which gives a basis of understanding unconventional non-Fermi liquid behaviors such as in YbRh_2Si_2 and.-YbAlB_4. It is a great success that the paradox of negative Meissner effect in odd-frequency superconductivity was solved, releasing its superconductivity from skeptical atmosphere in the community of strongly correlated electron systems.