To be fair, that article is pre-announcement and doesn&#x27;t have much detail on the actual discovery.<p>Actual paper here: <a href="http:&#x2F;&#x2F;journals.aps.org&#x2F;prl&#x2F;abstract&#x2F;10.1103&#x2F;PhysRevLett.116.061102" rel="nofollow">http:&#x2F;&#x2F;journals.aps.org&#x2F;prl&#x2F;abstract&#x2F;10.1103&#x2F;PhysRevLett.116...</a>