Spin orbit interaction fingerprints of a ballistic graphene Josephson junction

摘要: Abstract In this study, we establish the universal characteristics of contributions Rashba spin orbit interaction (RSOI) and Dresselhaus (DSOI) to supercurrent in a graphene Josephson junction. The most striking property skewness critical supercurrent, so far not unequivocally revealed, is presence maximum value or single singularity at key point (the DSOI equates half RSOI) pristine case. This sharp contrast that conventional junction π junction) its counterpart heavily doped case (monotonically decay). Using general delta potential model, determine barrier effect on quasilocalized Andreev level (π periodic) propagating mode (π/2 periodic). Moreover, trace pronounced Fabry–Perot oscillations patterns as function doping level, find it shows good qualitative agreement with recent experiment M. Ben Shalom et al. [Nat. Phys. 12, 318 (2016)]. Our results show definitive signatures specular reflection can be observed material suggest lead new possible application quantum computing.