Drumhead Surface States of Rhombohedral Graphite with Near Ideal Quantum Geometry Condition

The ideal quantum geometry (IQG) condition of equal magnitude between quantum metric ($G(k)$) and Berry curvature ($Ω(k)$) as in $|Ω|$/Tr$G$=1 has been associated with realizing fractional Chern insulators for the flat band in few layers…

The ideal quantum geometry (IQG) condition of equal magnitude between quantum metric ($G(k)$) and Berry curvature ($Ω(k)$) as in $|Ω|$/Tr$G$=1 has been associated with realizing fractional Chern insulators for the flat band in few layers of rhombohedral graphene (RG). More…