Electronic structure of V2AlC

We report an experimental and theoretical study of the electronic band structure and Fermi surfaces (FSs) of ${\mathrm{V}}_{2}\mathrm{AlC}$ single crystals using angle-resolved photoemission spectroscopy and density functional theory (DFT) calculations. We provide evidence of the existence of equivalent, complex hole FSs with a nearly tubular form along the $c$ axis, and of an intricate electron FS exhibiting tubes parallel to $c$ connected to one another by smaller tubes with axes parallel to the $ab$ plane. The electron FS thus exhibits a small delocalization along the $c$ axis. The local orbital character of each observed band is experimentally and theoretically assessed. DFT calculations show an excellent agreement with experiment. We also report the observation of an unstable surface state.