Experiments reveal the formation of new states of matter

[Judi Lynn]

The observations are consistent with the theory of a state with fermionic quadrupling.

BY
AMIT MALEWAR
OCTOBER 19, 2021



The iron-based superconductor material, Ba1−xKxFe2As2, is mounted for experimental measurements. Credit: Vadim Grinenko, Federico Caglieris

The basic principle of superconductivity is the formation of electron pairs. By pairing up together, the electrons can overcome any electrical resistance, making the material a superconductor. In simple, no electron pairs, no superconductivity.

Can the electrons condense into foursomes?

A new study found the answer, suggesting that they can. A physicist at the KTH Royal Institute of Technology offered the first experimental evidence of electron quadruplets, discovered a new state of matter. The study also unravels the mechanism through which this state of matter occurs.

Physicist Egor Babaev from the KTH Royal Institute of Technology and collaborators offered the evidence on fermion quadrupling in the iron-based material, Ba1−xKxFe2As2. The results follow nearly 20 years after Babaev first predicted this phenomenon and eight years after publishing a paper indicating it could occur in the material.

In recent years, the theoretical idea of four-fermion condensates has become broadly accepted.

More:
https://www.techexplorist.com/experiments-reveal-formation-new-states-of-matter/41897/

[flotsam2]

1. Judi

If there is a single poster on this board that explains more or baffles me more, I haven't seen them. But thank you because I read everything you post!

[lastlib]

2. Only NNadir baffles me more.....

...because I'm an idiot at chemistry. Judi's posts are more physics-oriented, and that's my wheelhouse. sorta. A lot is over my head, but I read it anyway because I'm interested in it. I really enjoy her posts!