Room Temp Super Conductor: Break Out the Champagne?

  • #1
hutchphd
Science Advisor
1,985
1,324

Summary:

Here we report superconductivity in a photochemically transformed carbonaceous sulfur hydride system, starting from elemental precursors, with a maximum superconducting transition temperature of 287.7 ± 1.2 kelvin (about 15 degrees Celsius) achieved at 267 ± 10 gigapascals.
Summary is from abstract in Nature.
Anybody know whether this is a big deal ?. It looks technically challenging (very high pressure) but great oaks from little acorns. I'm not current in superconductivity.🔎....
 
  • Like
Likes berkeman and etotheipi

Answers and Replies

  • #2
Vanadium 50
Staff Emeritus
Science Advisor
Education Advisor
2019 Award
25,664
8,854
This looks better than the silver superconductors of past years.

It has been known for a long time that there exist substances that superconduct only at high pressure. Some superconductors, like YBCO, were discovered by taking an existing superconductor and doing a substitution that squeezes the structure: for example, Y for La in LBCO. Essentially, this is pressure induced by chemical processes.

This work moves the bar incrementally from LaH10, at 250C and 170 GPa.
 
  • Informative
  • Like
Likes etotheipi, hutchphd and berkeman
  • #3
Vanadium 50
Staff Emeritus
Science Advisor
Education Advisor
2019 Award
25,664
8,854
@ZapperZ knows much more about superconductivity than I do. Maybe he can jump in.

This is H2S-based and H2S is just weird.
 
  • Like
Likes hutchphd
  • #4
dRic2
Gold Member
754
182
My thesis supervisor says it is a big deal. From what I understood recently people are trying to increase the critical temperature by adding hydrogen to various type of alloys (and it was experimentally confirmed that even at 1 atm, you can increase ##T_c## of some materials by adding H). So this gives hope to achieve higher temperatures (while working at lower pressure) by just doping the right material with hydrogen. This is what I understood.
 
  • Like
Likes hutchphd and Lord Crc
  • #5
100
36
This looks better than the silver superconductors of past years.

It has been known for a long time that there exist substances that superconduct only at high pressure. Some superconductors, like YBCO, were discovered by taking an existing superconductor and doing a substitution that squeezes the structure: for example, Y for La in LBCO. Essentially, this is pressure induced by chemical processes.

This work moves the bar incrementally from LaH10, at 250C and 170 GPa.
"Squeeze the structure"; isn't Lanthanum a bigger ion than Yttrium? And even larger cations like Bismuth and Lead have been in recent Lit.
 

Related Threads on Room Temp Super Conductor: Break Out the Champagne?

  • Last Post
Replies
15
Views
5K
Replies
28
Views
7K
  • Last Post
Replies
7
Views
3K
  • Last Post
Replies
10
Views
3K
Replies
4
Views
2K
Replies
2
Views
1K
  • Last Post
Replies
10
Views
4K
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
8
Views
14K
Top