Josephson current in a quantum dot coupled to a topological superconducting α-helical protein
Josephson current in a quantum dot coupled to a topological superconducting α-helical protein
复制标题
DOI：
10.1007/s00339-021-04643-1
复制
发表时间：
2021-06
期刊：
影响因子：
--
通讯作者：
Han-Zhao Tang;G. Ding;Xue Guo
中科院分区：
文献类型：
--
作者：
Han-Zhao Tang;G. Ding;Xue Guo
我们研究了一种拓扑超导α-螺旋蛋白的拓扑性质。结果表明，具有非平凡相的拓扑超导α-螺旋蛋白的两端均可形成Majorana零模式。我们的研究结果表明栅极场可以影响拓扑相位。采用格林函数方法，研究了量子点侧耦合到拓扑超导α-螺旋蛋白的约瑟夫森电流。由于马约拉纳零模式的泄漏，约瑟夫森电流显示一个微不足道/非微不足道的相变。该结果可用于探测蛋白质中马约拉纳零模式的存在。
We investigate the topological properties of a topological superconducting α-helical protein. It is shown that the Majorana zero modes can be formed at both ends of the topological superconducting α-helical protein with non-trivial phase. Our results indicate that the gate field can affect the topological phase. Employing Green’s function method, we investigate the Josephson current through a quantum dot side coupled to a topological superconducting α-helical protein. Due to leakage of the Majorana zero mode, the Josephson current shows a trivial/non-trivial phase transition. The results can be used to probe the existence of the Majorana zero mode in protein.