Impact of strong anisotropy on the phase diagram of superfluid 3He in aerogels
Impact of strong anisotropy on the phase diagram of superfluid 3He in aerogels
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DOI：
10.1103/physrevb.101.100502
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发表时间：
2020-03-12
影响因子：
3.7
通讯作者：
Ikeda, Ryusuke
中科院分区：
文献类型：
--
作者：
Hisamitsu, Tomohiro;Tange, Masaki;Ikeda, Ryusuke
最近，在强单轴各向异性极限下，超流体He-3在模型气凝胶中的p波极性配对态，引起了人们对s波超导体中Anderson定理的一个类比的兴趣。通过研究中等强度各向异性下的法向极性转变温度T-c和超流体能隙的低温行为，并将所得结果与实验数据进行比较，讨论了该定理在实际气凝胶极性相中满足的程度。简要讨论了安德森定理明显失效的情况。
Recently, one analog of the Anderson's theorem for the s-wave superconductor has attracted much interest in the context of the p-wave polar pairing state of superfluid He-3 in a model aerogel in the limit of strong uniaxial anisotropy. We discuss to what extent the theorem is satisfied in the polar phase in real aerogels by examining the normal to polar transition temperature T-c and the low temperature behavior of the superfluid energy gap under an anisotropy of a moderate strength and comparing the obtained results with experimental data. The situation in which the Anderson's theorem clearly breaks down is briefly discussed.