Deconfined criticality in bilayer graphene

TL;DR

This paper suggests that bilayer graphene can serve as an experimental platform to observe deconfined criticality, with electric fields inducing a transition from Ne9el to valence bond solid order involving fractionalized excitations.

Contribution

It proposes a realistic experimental setup in bilayer graphene to realize and study deconfined criticality, linking theoretical concepts to observable phenomena.

Findings

Ne9el order can be destabilized by a transverse electric field.

Electric field induced state likely exhibits valence bond solid order.

Transition involves emergent fractionalized and gauge excitations.

Abstract

We propose that bilayer graphene can provide an experimental realization of deconfined criticality. Current experiments indicate the presence of N\'{e}el order in the presence of a moderate magnetic field. The N\'{e}el order can be destabilized by application of a transverse electric field. The resulting electric field induced state is likely to have valence bond solid order, and the transition can acquire the emergent fractionalized and gauge excitations of deconfined criticality.