English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Semiconductor double-layers in the quantum Hall regime tend to havesuperfluid exciton condensate ground states when the total filling factor is anodd integer, provided that the Landau orbitals at the Fermi level in the twolayers have the same orbital character. Since the $N=0$ Landau level of bilayergraphene contains states with both $n=0$ and $n=1$ orbital character, thephysics of double bilayers falls outside previously studied cases. We show thatthe superfluid phase stiffness vanishes in double bilayer graphene when $n=0$and $n=1$ orbitals states are degenerate in one of the layers, even though thegap for charged excitations remain large, and speculate that this property isbehind the recent discovery of strong anomalous drag near a $n=0/1$ degeneracypoint.

Anomalous Drag in Double Bilayer Graphene Quantum-Hall Superfluids