Probing the superconducting gap symmetry of $\alpha$-PdBi${}_2$: A penetration depth study

S. Mitra, K. Okawa, S. Kunniniyil Sudheesh +3

We report measurements of the in-plane London penetration depth $\lambda$ in single crystals of the $\alpha$-PdBi${}_2$ superconductor --- the $\alpha$-phase counterpart of the putative topologica…