In conventional superconductors, Cooper pairing occurs between electrons of opposite spin.
We observe spin-polarized superconductivity in Bernal bilayer graphene when doped to a …

To access superconductivity via the electric field effect in a clean, two-dimensional device is
a central goal of nanoelectronics. Recently, superconductivity has been realized in …

Electronic flat-band materials host quantum states characterized by a quenched kinetic
energy. These flat bands are often conducive to enhanced electron correlation effects and …

We study superconductivity of twisted bilayer graphene with local and nonlocal attractive
interactions. We obtain the superfluid weight and Berezinskii-Kosterlitz-Thouless (BKT) …

By tuning the angle between graphene layers to specific “magic angles” the lowest energy
bands of twisted bilayer graphene (TBLG) can be made flat. The flat nature of the bands …

Recent experiments show how a bilayer graphene twisted around a certain magic angle
becomes superconducting as it is doped into a region with approximate flat bands. We …

In flat bands, superconductivity can lead to surprising transport effects. The superfluid
“mobility”, in the form of the superfluid weight D s, does not draw from the curvature of the …

The superconducting state and mechanism are among the least understood phenomena in
twisted graphene systems. Recent tunneling experiments indicate a transition between …

Superconductivity has been observed in bilayer graphene [1, 2]. The main factor that
determines the mechanism of the formation of this superconductivity is the “magic angle” of …

Recently, moiré superlattices have been found on the surface of topological insulators due
to the rotational misalignment of topmost layers. In this work, we study the effects of moiré …