A team of scientists led by physicists from the University of Tennessee presented evidence of the presence of
In their work, scientists reproduced physics,similar to cuprates (complex compounds of copper and oxygen), the most famous high-temperature superconductors, by growing one-third of a monolayer of tin atoms on a silicon substrate. In this case, the repulsion between tin electrons is so great that they cannot move and do not possess superconductivity.
To overcome this resistance, scientistsintroduced boron atoms into the crystal structure of the silicon layer. Such “inclusions” take some of the electrons from the tin layer (up to 10%), allowing the rest to move freely inside the layer. Experiments have shown that such a modified material has metallic and superconducting properties. Moreover, its critical temperature exceeds analogues of almost all elementary superconductors.
In addition, the researchers found that in thisThe combination of tin and silicon exhibits the properties of chiral superconductors. In chiral systems of rotation, clockwise and counterclockwise are the same, but at the same time different, the scientists explain, this can be compared with the similarity and difference between the right and left hands.
In quantum mechanics, the properties of single orpaired electrons are encoded in a mathematical wave function, which can be left, right, or "topologically trivial". The study showed that the superconducting wave function in the tin layer turns out to be directed clockwise in one part of the sample, and counterclockwise in the other. Over time, they change, but always rotate in different directions.
In addition, experiments have shown thatIn the new superconductor, two one-dimensional conduction channels are observed that run along the perimeter of the sample material. Exotic entities (Marjoram particles) are placed in these channels, which, under certain conditions, combine a particle and an antiparticle. This behavior also testifies in favor of the presence of chiral superconductivity.
Marjoram particles are topologically protected,immune to what is happening in their environment and are promising elements for quantum computers, scientists say. The researchers believe that integrating the exotic properties of superconductors with an easily scalable platform of silicon-based materials will bring quantum technologies closer to industrial-scale production.
Read more:
Two photos of the Earth with a difference of 50 years were compared at NASA: what scientists found
An Earth-sized planet has been found not far from us. Perhaps there is an atmosphere
Look at the golden "braces" of the 17th century: they were installed by a socialite