2015/06/17 by Zhen Gao, Gao, Zhen, Wanfei Shan +3
Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Topological Materials and Phenomena
paper · pdf · doi:10.48550/arxiv.1506.05188
openalex publication_date 2015/06/17 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
We investigate the Josephson effects in the junction formed by DIII-class topological and s-wave superconductors, by embedding a quantum dot in the junction. Three dot-superconductor coupling manners are considered, respectively. As a result, the Josephson current is found to oscillate in 2π period. Moreover, the presence of Majorana doublet in the DIII-class superconductor renders the current finite at the case of zero phase difference, with its sign determined by the fermion parity of such a jucntion. In addition, the dot-superconductor coupling plays a nontrivial role in adjusting the Josephson current. When the s-wave superconductor couples to the dot in the weak limit, the current direction will have an opportunity to reverse. The results in this work will be helpful for understanding the transport properties of the DIII-class superconductor.