Andreev reflection in a patterned graphene nanoribbon superconducting heterojunction
Andreev reflection in a patterned graphene nanoribbon superconducting heterojunction
复制标题
图案化石墨烯纳米带超导异质结中的安德烈耶夫反射
DOI：
10.1016/j.physleta.2018.12.038
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发表时间：
--
影响因子：
2.6
通讯作者：
H.X.Yang
中科院分区：
文献类型：
--
作者：
ChunxuBai;YanlingYang;YongjinJiang;H.X.Yang
在这项研究中，一种改进的超导异质结由锯齿形石墨烯纳米颗粒组成，它由三角形图案化并支持局部边缘模式。由于所有的局域边缘模都来自于一个图案操作，因此图案的结构特征对相干量子输运有着巨大的影响。特别是，图案化模式可以大大增强铁磁纳米晶体边缘和反铁磁纳米晶体边缘的Andreev反射。自旋分辨零偏压电导与无限宽超导异质结中的零偏压电导形成鲜明对比，表现出不同的铁磁相互作用依赖性。
In the study, an improved superconducting heterojunction is made up of a zigzag graphene nanoribbon, which is patterned by a triangle and supports localized edge mode. Since all the localized edge modes stem from a pattern operation, the structure features of the pattern exert an enormous function on the coherent quantum transport. Especially, the patterned modes can enhance the Andreev reflection largely both in the ferromagneticnanoribbon edge and the antiferromagneticnanoribbon edge. The spin resolved zero bias conductances, in sharp contrast to its counterpart in the infinite width superconducting heterojunction, exhibit the different dependence on the patterned ferromagnetic interaction.