Nematicity and competing orders in superconducting magic-angle graphene

Abstract

<jats:title>Twisted and nematic</jats:title> <jats:p> Electrons in quantum materials can break rotational symmetry even when the underlying crystal lattice does not. This phenomenon, called nematicity, has been observed in many unconventional superconductors. Cao <jats:italic>et al.</jats:italic> found that magic-angle twisted bilayer graphene, in which superconductivity was recently discovered, also exhibits nematicity. The breaking of rotational symmetry was observed through transport measurements, which exhibited characteristic anisotropy. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article issue="6539" page="264" related-article-type="in-this-issue" vol="372">264</jats:related-article> </jats:p>