Details : Graphene is a monatomic layer of carbon atoms arranged on a honeycomb lattice. Since its discovery in 2004, graphene with Dirac-fermionic band structure has provided an ideal and versatile platform to study the interplay between relativistic Dirac fermions and superconductivity [1]. In clear contrast to the case of normal metals, electrostatic gate tunability in graphene with atomic thickness allows unique control over the carrier density and type. Proximity coupling of a superconducting electrode to graphene induces a unique coherent superconducting order in the graphene layer near the interface, which is often the result of the various special normal-state physical characteristics of graphene. 

My Interests : 

1. Realization of perfect Cooper pair splitter based on graphene

2. Studying Multi-terminal Josephson junction to realize topological Weyl point 

3. Developing microwave/Near-IR single photon detector (collaboration with Raytheon BBN in US) [2] 

Fig. 1 | Schematics of p/n-Graphene Josephson junction 

Fig. 2 | Vertical graphene Josephson junction 

[1] Gil-Ho Lee et al., Rep. Prog. Phys (Invited Review); Nat. Comm. 6, 6181 (2015); Nat. Comm. 4, 2525 (2013); Appl. Phys. Express 6, 025102 (2013); Phys. Rev. Lett. 107, 146605 (2011) 

[2] Gil-Ho Lee et al., Microwave single photon detector, in preparation (2017)