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Magnon-Cooparons in magnet-superconductor hybrids

Generation and detection of spinful Cooper pairs in conventional superconductors has been intensely pursued by designing increasingly complex magnet-superconductor hybrids. Here, we demonstrate theoretically that magnons with nonzero wavenumbers universally induce a cloud of spinful triplet Cooper pairs around them in an adjacent conventional superconductor. The resulting composite quasiparticle, termed magnon-cooparon, consists of a spin flip in the magnet screened by a cloud of the spinful…

Shortage of Skilled Workers: Legislative Projects and Potentials of Start-ups

The German government has committed itself to liberalising labour migration. According to a ‘policy paper’, migrants with a work contract and professional experience are to be admitted on the basis of a ‘experience pillar’ if they have completed professional training abroad, irrespective of whether it is equivalent with domestic standards or not. In addition, a ‘potential pillar’ will introduce a points system for jobseekers who meet a number of criteria. The Research Centre Immigration & Asylum…