Observing the suppression of superconductivity in RbEuFe$_4$As$_4$ by correlated magnetic fluctuations · HackerPapers discussionshttps://hackerpaper.kaipfister.de/p/2010.09901/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMTObserving the suppression of superconductivity in RbEuFe$_4$As$_4$ by correlated magnetic fluctuations — mentioned by patrakovhttps://news.ycombinator.com/item?id=27392240urn:hackerpapers:mention:2010.09901:27392240Fri, 04 Jun 2021 10:23:36 GMT<p>Superconductivity is not really a &quot;yes or no&quot; property. It can be destroyed by a too-strong external magnetic field, or, equivalently, a too-strong current. The quantitative side of this thing (i.e. what allows us to say &quot;superconductivity is weakened&quot;) is &quot;how strong is too-strong&quot;. We can also talk about the &quot;order parameter&quot;, which is related to the fraction of conductivity electrons participating in Cooper pairs, and to the depth (usually ~100 nm) to which the external magnetic field does penetrate the superconductor. The arXiv link to the original research is…</p><p><a href="https://hackerpaper.kaipfister.de/p/2010.09901/">Paper and discussion history</a>. A mention is not an endorsement.</p>cond-mat.supr-con