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A new paper that confirms superconductivity at room temperature in wild, hydrogen-rich materials



The team of physicists released peer review results documenting superconductivity at room temperature in hydrogen-rich compounds of lanthanum hydride.

Researchers around the world are competing to produce materials that conduct electricity without losing their resistance at room temperature. (You can read about this fascinating effort and its history here.)

Most recently, scientists have focused on hydrogen fuel, a substance that is compressed between diamonds with a pressure similar to that found in the Earth's nucleus. This new paper has a temperature of -23 ℃ or technically the room temperature is set to -9.67 ℃ when the window is opened in the mid-western extreme vortex conditions.

In 1911, physicist Heike Kamerlingh Onnes discovered superconductivity in elemental mercury, which is almost non-absolute. Since then, scientists have been working to increase the temperature at which materials turn into superconductors, as these materials can deliver electricity cheaper and have important applications in medical and quantum computing.

Searches include the physicist's field of finding new properties of molecules that currently contain hydrogen or a large amount of hydrogen, such as hydrides, which are squeezed under high pressure at high temperatures.

The team, led by physicist Mikhail Eremets of the Max Planck Institute for Chemistry, has begun the latest race for high temperature superconducting hydrides in 2015. They published a paper about superconductivity discovery at 70 degrees.

In a recent paper, the researchers put a piece of lanthanum in an insulating ring and then put it in a box filled with pressurized hydrogen gas. They held the gasket between a pair of diamonds and continued to pull the diamond until the diamond surface pressed the desired surface with 2 million times the pressure. The laser then collides with the sample to form the hydrogenated lanthanum. Finally, they measure whether the material is actually made, in fact, a superconductor.

The researchers describe the two measurements in detail in this paper. One measures the resistance drop to zero at a temperature of -23 ° C. Other studies have found that the temperature drops when a magnetic field is present. It is a clue that the magnetic field actually measures the sample, not the problem with the experiment setup.

This newspaper first appeared in December. I included this paper on a deep dive on the subject. But now it has been published in peer-reviewed journals and has confirmed the results of the number of people hunting high-temperature superconductors. (Experiments are considered "hot" even if done in winter.)

This paper is an important event over warm temperatures. In the past, finding new superconductors required luck. This is because the temperature at which the material turns into a superconductor is difficult to predict. However, the theory of the recently discovered high-temperature superconductors is based on theory.

James Hamlin, a physicist at the University of Florida, wrote from a Nature standpoint: "This remarkable success in theory seems to be driven by innovative computation methods that were possible with the development of computing power."

I have more work to do. Superconductors prevent the magnetic field from passing through the magnetic field, a phenomenon called the Meissner effect. Scientists have yet to measure this effect in hydrogenated lanthanum. In addition, other teams around the world are working to find materials that convert to high-temperature or low-pressure superconductors and are suitable for use in modern technology.

Today, however, scientists seem to have a solid foundation to build.


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