Very cool, I didn’t know a toggleable superconductor was even possible. With all this research into superconductivity it’s only a matter of time before a room-temperature superconductor is found.
doped EuFe2As2
After the shenanigans from a few months ago, doubt
Yeah what happened to that one out of South Korea?
I forgot about that one.
Yeah I’ll get excited after it gets peer reviewed
It’s already been published. But it’s superconducting at 10 K. This is a new high temperature record, but pretty far from room temperature.
Yeah the headline makes you think it’s even within “normal” temperatures, and then you see that it’s like 10°C
belowabove Absolute Zero.Nitpicky but it’s above absolute zero
Even if it was somehow 10° below absolute zero, it would still be 10° above absolute zero
I thought negative Kelvin were sometimes used to describe very very high temperatures but I could be wrong.
Thanks for the downvotes y’all, enjoy being wrong:
" Negative absolute temperatures (or negative Kelvin temperatures) are hotter than all positive temperatures - even hotter than infinite temperature."
Lmao I was kind of making a joke there, it’s an absolute scale so a negative number can’t actually exist, i.e. |-10| = 10
Additionally, temperatures expressed as negative Kelvin aren’t actually negative Kelvin in reality (“reality” meaning the actual physical existence in our material world) because, as you pointed out, the material would actually be more temperate. Negative Kelvin is useful to represent systems where adding energy decreases the entropy of the system, rather than the standard of increasing entropy, but to relate it to the actual heat or energy of the material gets murky.
superconducting below 10K or -263C. a record but by no means room temperature.
Loads of things superconduct below 10K - aluminium for one. This is for a different type of superconductor that can be turned on and off with a magnetic field.
Not quite in the usable temp for engineering yet but definitely on the right path. And a wee bit less sketchy than the last one. That combine with the progress is fusion reactors. We have a bright future in energy ahead of us (but pretty grim everywhere else)
