Surface Scattering Effect and the Stripe Order in Films of the Superfluid 3He B Phase
Surface Scattering Effect and the Stripe Order in Films of the Superfluid 3He B Phase
复制标题
超流3He B相薄膜的表面散射效应和条纹顺序
DOI：
10.7566/jpsj.85.094604
复制
发表时间：
2016
影响因子：
1.7
通讯作者：
K. Aoyama
中科院分区：
文献类型：
--
作者：
K. Aoyama
从理论上研究了超流 3He B 相薄膜中的表面散射效应，重点是薄膜平面中自发破缺平移对称性的条带序的稳定性以及该空间非均匀相中的准粒子激发。基于弱耦合极限中的Ginzburg-Landau理论，我们证明了最初针对具有两个镜面表面的薄膜讨论的条纹顺序在具有一个镜面和一个扩散表面的薄膜中可以稳定，这应该对应于基底上的超流体3He。通过数值求解Eilenberger方程还发现，由于条纹结构，出现了与表面Andreev束缚态不同的中能隙态，其特征反映在局域态密度中。
Surface scattering effects in thin films of the superfluid 3He B phase have been theoretically investigated, with an emphasis on the stability of the stripe order with spontaneous broken translational symmetry in the film plane and quasiparticle excitations in this spatially inhomogeneous phase. Based on the Ginzburg–Landau theory in the weak coupling limit, we have shown that the stripe order, which was originally discussed for a film with two specular surfaces, can be stable in a film with one specular and one diffusive surfaces which should correspond to superfluid 3He on a substrate. It is also found by numerically solving the Eilenberger equation that due to the stripe structure, a midgap state distinct from the surface Andreev bound state emerges and its signature is reflected in the local density of states.