V001 / JSI / T281


The journal Physical Review Letters has published the article Field-Induced Instability of a Gapless Spin Liquid with a Spinon Fermi Surface by Matjaž Gomilšek, Martin Klanjšek, Matej Pregelj and Andrej Zorko from the Solid State Physics Department and Rok Žitko from the Department of Theoretical Physics of the “Jožef Stefan” Institute. With collaborators from China and France they discovered an instability of an enigmatic quantum spin liquid with a spinon Fermi surface. They showed that its magnetic excitation (spinons), which are equivalents of electrons with spin but no charge, form pairs in a magnetic field. This process is analogous to the formation of Cooper pairs in superconductors. The discovery of a “magnetic superconductor” could be important in the fields of spintronics and quantum computing.