Triplet superconductivity demonstrated under high pressure

ScienceDaily | 4/19/2019 | Staff
Sugar12 (Posted by) Level 4
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By using very high pressure and a magnetic field, the team demonstrated that the uranium-based material UBe13 exhibits 'triplet superconductivity.' This is a phenomenon in which electrons form pairs in a parallel spin state. In conventional superconducting materials, electrons of opposite spins pair together, effectively cancelling out each other's spins.

"Until now, there have been very few clear-cut examples of triplet superconductivity, even though a number of superconductors have been discovered in various metallic systems in the past century," says Tohoku University materials scientist Yusei Shimizu. "Our pressure experiments at low temperatures have provided strong evidence for spin-triplet superconductivity in UBe13."

Materials - Temperatures - Electricity - Resistance - Energy

Materials that become superconducting, often at low temperatures, allow electricity to pass through them with virtually no resistance, minimizing energy loss in the process. This phenomenon, discovered initially in some pure metals, has been found in an amazing variety of different systems. Among these, UBe13 was one of the earliest discovered 'heavy-fermion' superconductors. The electrons in heavy fermion metallic compounds appear to be 1,000 times more massive than electrons in ordinary metals.

With the new insight, scientists can now explain what happens in the enigmatic uranium material UBe13 at the atomic scale and how it acts as a spin-triplet...
(Excerpt) Read more at: ScienceDaily
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