论文标题
具有三组分配对差距函数的超导连接
Superconducting junction with tri-component pairing gap functions
论文作者
论文摘要
我们研究了一个超导式Hetro结合，其一侧为特征，其特征是非常规手性$ p $ - 波差距功能$ p_x \ pm ip_y $，另一侧是传统的$ s $ - 波。尽管在交界区域中，$ \ pm \ pm \fracπ{2} $的相对相位在交界区域中受到青睐，但相互差异无法同时实现$ \ pm \ pm \fracπ{2} $，这会导致挫败感。基于Ginzburg-Landau自由能分析，沮丧的模式被确定为$ s +iη_1（e^{iη_2φ/2} p_x +η_3e^e^e^{ - iη_2φ/2； $ p_y $ - 波间隙函数。此外，我们发现连接点表现出各向异性磁电效应，表现为沿连接边缘的各向异性自旋磁化。
We study a superconducting hetro-junction with one side characterized by the unconventional chiral $p$-wave gap function $p_x\pm ip_y$ and the other side the conventional $s$-wave one. Though a relative phase of $\pm \fracπ{2}$ between any two components of gap functions is favored in the junction region, mutual phase differences cannot achieve $\pm \fracπ{2}$ simultaneously, which results in frustration. Based on a Ginzburg-Landau free energy analysis, the frustrated pattern is determined to be $s+ iη_1 (e^{ iη_2 φ/2}p_x +η_3 e^{- iη_2 φ/2}p_y)$ with $η_j=\pm 1$ ($j=1,2,3$), where $φ$ is the phase difference between the $p_x$- and $p_y$-wave gap functions. Furthermore, we find that the junction exhibits an anisotropic magnetoelectric effect, manifesting itself as an anisotropic spin magnetization along the edge of the junction.
