Minimal Conductance Quantization in a Normal-Metal/Unconventional Superconductor Junction
Minimal Conductance Quantization in a Normal-Metal/Unconventional Superconductor Junction
复制标题
普通金属/非常规超导结中的最小电导量化
DOI：
10.1007/s10909-018-1858-7
复制
发表时间：
2018
影响因子：
2
通讯作者：
Yasuhiro Asano
中科院分区：
文献类型：
--
作者：
Satoshi Ikegaya;Yasuhiro Asano
讨论了正常金属/非常规超导结中零偏压差分电导的最小值。数值模拟表明，在正常金属中强杂质散射极限下，零偏置电导被量子化。该整数表示通过该结点的完美传输通道的数量。通过对哈密顿量的手征对称性的研究，证明了脏正则段中存在双折简并共振态。
We discuss the minimum value of the zero-bias differential conductance in a normal-metal/unconventional-superconductor junction. A numerical simulation demonstrates that the zero-bias conductance is quantized atin the limit of strong impurity scatterings in the normal-metal. The integerrepresents the number of perfect transmission channels through the junction. By focusing on the chiral symmetry of Hamiltonian, we prove the existence of-fold degenerate resonant states in the dirty normal segment.