15 ms·
That's a failed repro then right? Below 110K is below -163.15 Celcius How would that compare to other superconductors?
by fgeahfeaha 3y ago
That's a failed repro then right?
Below 110K is below -163.15 Celcius
How would that compare to other superconductors?
- p1mrx 3y agoTc = 110 K would take the #4 spot on https://en.wikipedia.org/wiki/List_of_superconductors https://en.wikipedia.org/wiki/List_of_superconductors
- wthomp 3y ago#3 spot at atmospheric pressure
- rbinv 3y agoAt atmospheric pressure, no less.
- deleted 3y ago[deleted]
- moffkalast 3y ago> HgTlBaCaCuO New band name. And band gap.
- jacquesm 3y agoIt is and it isn't. It's at ambient pressure (which is something useful), and there is something very odd happening much higher up that needs to be explained. They say their sample purity is higher than the one the Korean team had, so that would normally lead to better yield and easier confirmation of the superconductivity. But since it does show the Meissner effect in other samples as well at room temperature there is a lot that still needs explaining before we can say it is a failed reproduction.
- BasedAnon 3y agoperhaps an impurity caused the effect they're looking for
- jacquesm 3y agoYes, that's possible and something that has already happened once before: this is exactly how x-rays and eventually radioactivity were discovered, a chance contamination.
- bloopernova 3y agoI adore stories that include the phrase "that's odd" or "something odd happens when ..." Even if we don't get the astonishing result originally claimed by the rogue paper, it's still a triumph of science in my ignorant opinion.
- jacquesm 3y agoAnd sometimes 'that's odd' leads to things larger than the original goal. You really don't want to hear those words in the doctors' office though.
- BasedAnon 3y agotechnically a failure, but still a strange result
- piyh 3y agoI don't think it's a failure if the original claims are showing some kind of promise, science is being done, and the frontiers of knowledge are being pushed forward. In other words, not "Eureka!" but "that's weird".
- HybridCurve 3y agoOne of the most well known, YBCO, has a Tc of 95K.
- seewhydee 3y agoYeah it looks to me like either a replication failure or even evidence AGAINST a superconducting phase. A superconductor's resistance curve is supposed to show a sharp drop to zero at the transition temperature. If it's a dirty inhomogenous sample (e.g. specks of superconductor embedded in non-superconducting material), you get a kink where the curve descends to a non-zero background resistance. In the Southeast University data, there's a smooth curve that goes down until they get to the noise floor. There's no transition.