Spin density wave formation in graphene facilitated by the in-plane magnetic field

TL;DR

This paper proposes that an in-plane magnetic field can induce excitonic condensation of electron-hole pairs in graphene, potentially leading to a new magnetic-field-driven phase transition.

Contribution

It introduces a theoretical model showing how in-plane magnetic fields can facilitate spin-dependent excitonic condensation in graphene.

Findings

Transition temperature scales with magnetic field as T_c ~ 0.1 B

Magnetic field promotes electron-hole pairing with opposite spins and chiralities

Theoretical estimates suggest possible experimental realization

Abstract

We suggest that by applying a magnetic field lying in the plane of graphene layer one may facilitate an excitonic condensation of electron-hole pairs with opposite spins and chiralities. The provided calculations yield a conservative estimate for the transition temperature $T_c \sim 0.1 B$.