Superconductivity and Lattice Instability in Compressed Lithium from Fermi Surface Hot Spots

Deepa Kasinathan, J. Kunes, A. Lazicki +4

The highest superconducting temperature T${}_c$ observed in any elemental metal (Li with T${}_c$ ~ 20 K at pressure P ~ 40 GPa) is shown to arise from critical (formally divergent) ele…