Emergent Zeeman-Resilient Superconductivity Beyond the Spin-Paramagnetic Limit in Ultrathin NiBi3

Gabriel Sant'Ana, Leonardo Pessoa da Silva, Pedro Schio +4

The spin-paramagnetic limit sets a fundamental magnetic-field bound for conventional superconductors. Here we show that ultrathin NiBi${}_3$ films develop a highly field-resilient su…