Discovery of a mechanism for making superconductors more resistant to magnetic fields

Phys.org  March 30, 2021
Researchers in Japan discovered that when the crystalline films of indium is thinned to a two-dimensional atomic layer, the spin, and the momentum of the electrons in the layer are coupled, causing the electron spins to frequently rotate. This offsets the effect of the changes in electronic energy induced by the magnetic field and thus preserves superconductivity. This mechanism can enhance the critical magnetic field up to 16-20 Tesla, which is approximately triple the generally accepted theoretical value. It is expected to have a wide range of applications as it was observed for an ordinary superconducting material and does not require either special crystalline structures or strong electronic correlations. Based on these results, they plan to develop superconducting thin films capable of resisting even stronger magnetic fields. They intend to create a hybrid device composed of superconducting and magnetic materials that is needed for the development of topological superconductors: a vital component in next-generation quantum computers…read more. Open Access TECHNICAL ARTICLE 

Schematic illustration of dynamic spin-momentum locking. Credit: Nature Communications volume 12, Article number: 1462 (2021) 

Posted in Superconductor and tagged , , , .

Leave a Reply