2017/02/28 by Shu-Ping Lee, Debaleena Nandi, F. Marsiglio +2 · 9 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Electron #Gapless playback #Graphene #Graphene research and applications #Josephson effect #Josephson energy #Josephson phase #Landau quantization #Lattice (music) #Pairing #Physics #Pi Josephson junction #Point reflection #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #Superconductivity #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.95.174517
published in Physical review. B./Physical review. B 95(17) (American Physical Society) · 6 pages, 4 figures
arxiv created 2017/05/24 · openalex publication_date 2017/05/24 · arxiv updated 2017/05/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Nonuniform strain distributions in a graphene lattice can give rise to uniform pseudomagnetic fields and associated pseudo-Landau levels without breaking time-reversal symmetry. We demonstrate that by inducing superconductivity in a nonuniformly strained graphene sheet, the lowest pseudo-Landau levels split by a pairing gap can be inverted by changing the sign of the pairing potential. As a consequence of this inversion, we predict that a Josephson \ensuremathπ junction deposited on top of a strained graphene sheet exhibits one-dimensional gapless modes propagating along the junction. These gapless modes mediate single electron tunneling across the junction, giving rise to the 4\ensuremathπ-periodic fractional Josephson effect.