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

We have created a long-lived (~ 40 s) persistent current in a toroidalBose-Einstein condensate held in an all-optical trap. A repulsive opticalbarrier creates a tunable weak link in the condensate circuit, which can affectthe current around the loop. Superflow stops abruptly at a barrier strengthsuch that the local flow velocity exceeds a critical velocity. The measuredcritical velocity is consistent with dissipation due to the creation ofvortex-antivortex pairs. This system is the first realization of an elementaryclosed-loop atom circuit.

Superflow in a toroidal Bose-Einstein condensate: an atom circuit with a tunable weak link