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High Temperature Superconductivity Record Smashed By Sulfur Hydride
KentuckyFC writes Physicists at the Max Planck Institute for Chemistry in Germany have measured sulfur hydride superconducting at 190 Kelvin or -83 degrees Centigrade, albeit at a pressure of 150 gigapascals, about the half that at the Earth's core. If confirmed, that's a significant improvement over the existing high pressure record of 164 kelvin. But that's not why this breakthrough is so important. Until now, all known high temperature superconductors have been ceramic mixes of materials such as copper, oxygen lithium, and so on, in which physicists do not yet understand how superconductivity works. By contrast, sulfur hydride is a conventional superconductor that is described by the BCS theory of superconductivity first proposed in 1957 and now well understood. Most physicists had thought that BCS theory somehow forbids high temperature superconductivity--the current BCS record-holder is magnesium diboride, which superconducts at just 39 Kelvin. Sulfur hydride smashes this record and will focus attention on other hydrogen-bearing materials that might superconduct at even higher temperatures. The team behind this work point to fullerenes, aromatic hydrocarbons and graphane as potential targets. And they suggest that instead of using high pressures to initiate superconductivity, other techniques such as doping, might work instead.
Thank you for being a friend
Traveled down the road and back again
Your heart is true, you're a pal and a cosmonaut.
And if you threw a party
Invited everyone you knew
You would see the biggest gift would be from me
And the card attached would say, thank you for being a friend.
I guess these superconductors won't be used in any cycling applications then...
Do not look into laser with remaining eye.
It stinks!
fullerenes, aromatic hydrocarbons and graphane
Oh Carbon, is there anything you can't do?
Seriously. Superconductors, batteries, capacitors, bullet proof vests, orbital cables, etc...?
I don't read AC A human right
http://www.superconductors.org...
unreadable website spamming spotted.
They can see it works but yet they cannot understand it. Now why should I believe them when they say ghosts don't exists even though my grandma totally swears that she saw one about a month ago?
You should test it for yourself. See if you can make a superconducting magnet with your grandmother's ghosts.
I should use this sig to advertise my book ISBN-13 : 978-1501515132.
Because, with the proper equipment and training, you could go and mix up a batch of ceramic superconductor and measure it superconducting for yourself. Or measure one of theirs.
It seems highly unlikely that your grandma can describe to me exactly how to go about seeing a ghost whenever I want. If she can, I know where she can get a million dollars.
How can a material be pressed at 150 gigapascals and still be cool?
I thought that if you put a billion atmospheres of pressure on material, said material would be heated by the pressure. Is that not so?
Inquirin' minds want to know
I don't know the meaning of the word 'don't' - J
Because you can repeat the process as many times as you want and get the same answer. You cannot watch the same spot as your grandma and see a ghost. They also log their data, your grandma doesn't carry a camera to record ghosts, does she?
A high-temperature superconductor that requires ungodly pressures...kind of defeats the point doesn't it?
"When information is power, privacy is freedom" - Jah-Wren Ryel
Take time to read Oliver Heaviside "Electrical Papers" - 1893, you will learn a lot about super conductivity or super-resistivity (as he names it, as he is originator of this concept), as he clearly states the misconceptions widely propagated (in space and as clearly see in time) on this issue.
How to See Ghosts 101 :
Develop one or more of the following:
1. cataracts
2. glaucoma
3. macular degeneration
the preceding comment is my own and in no way reflects the opinion of the Joint Chiefs of Staff
So when are we gonna make that Space Elevator from this shit?
I was trying to figure out why they're referring to "sulfur hydride" instead of "hydrogen sulfide". After I got off our broken public wifi and got the paper to load, I see that sulfur turns metallic above 95 GPa, and apparently hydrogen sulfide at high pressures starts to become metallic as well. In that regime, it probably makes more sense to think of it as a metal hydride, if not an intermetallic compound.
A scientist, like any person, can say anything they want. You shouldn't believe something a scientist says just because they say it. They have opinions and can be wrong just like everyone can. I'm sure some scientists say ghosts exist and others say they don't.
Science, on the other hand, can find no evidence of ghosts. That doesn't mean they don't exist, however. Science makes no statement one way or the other on the subject of ghosts. They have never been observed, as far as we know, but could still exist.
What a fool believes, he sees, no wise man has the power to reason away.
I think we really need tags for content.
Get free satoshi (Bitcoin) and Dogecoins
More importantly, other people should be able to reproduce your results (within statistical significance) if they follow your same procedures.
-- I ignore anonymous replies to my comments and postings.
At that pressure sulphur hydride just goes "ok ok take my electrons".
I looked up the atmospheric pressure of other planets, saw Venus was 92 Earth Atmospheres and thought "wow, that's pretty close to 95 GPa" ... :(
Turns out 95 GPa is 937,577 Earth Atmospheres
I wonder if the "surface" or even centre of Jupiter is anywhere near 150 GPa?
Talk about people using archaic units, the name of the SI user friendly temperature was changed to Celsius in 1948
Badly compressed JPGs? Check. Annoying GIFs on the main page? Check. Bold, colored text in a variety of random formats? Check. Claims of unprecedented scientific breakthroughs? Check. Yeah, I'm going to assume this is a crank site.
So we had high-temperature supraconductors that we did not understand, and low temperature supraconductors with a theory. And now this high temperature supraconductor lambasts the theory. How frustrating! We are back to the situation where we do not understand anything.
But there are many roads to explore and many ways to seek out room temperature superconductivity.
As with many other discoveries, the stubborn and dedicated researcher will sooner or later find the answer.
We should never be cutting back on research. It is definitely a situation where more is always better than less.
Obviously, this article is keeping up with the times!
I read the experimental paper in arxiv. Specifically, the superconducitvity in H2S at high pressure has been predicted in early 2014 (J. Chem. Phys. 140, 040901 (2014)). It is so amazing!