论文标题
单重式三重奏混合在非中心对称超导体ru $ _ {7} $ b $ _ {3} $的顺序参数中
Singlet-triplet mixing in the order parameter of the noncentrosymmetric superconductor Ru$_{7}$B$_{3}$
论文作者
论文摘要
预测在没有倒置中心的超导体中会产生的关键效果之一是单线和三重序列参数的混合，由于平等，它们本身不再是良好的量子数。我们已经通过从涡旋晶格的小角度中子衍射，探索了非中心超导体ru $ _7 $ b $ _3 $中的间隙结构，以搜索提出的混合订单参数。我们发现，涡旋晶状形构想的测得的温度依赖性很好地表征了一个模型，该模型构建了构建的模型，该模型描述了倒置对称性对超导状态的影响，表明存在混合的单线缝隙和确认理论预测。
One of the key effects which is predicted to arise in superconductors without a centre of inversion is the mixing of singlet and triplet order parameters, which are no longer good quantum numbers on their own due to parity. We have probed the gap structure in the noncentrosymmetric superconductor Ru$_7$B$_3$, through small-angle neutron diffraction from the vortex lattice, in order to search for the proposed mixed order parameter. We find that the measured temperature dependence of the vortex-lattice form factor is well characterised by a model constructed to describe the effects of broken inversion symmetry on the superconducting state, indicating the presence of a mixed singlet-triplet gap and confirming the theoretical predictions.
