Fermi surface and nested magnetic breakdown in WTe2

We report a detailed Shubnikov-de Haas (SdH) study on the Weyl type-II\nsemimetal WTe2 in magnetic fields up to 29 T. By using the SdH results to guide\nour density functional theory calculations, we are able to accurately determine\nits Fermi surface by employing a moderate Hubbard U term, which is an essential\nstep in explaining the unusual electronic properties of this much studied\nmaterial. In addition to the fundamental orbits, we observe magnetic breakdown,\nwhich can consistently be explained within the model of a Russian-doll-nested\nFermi surface of electron and hole pockets. The onset of magnetic breakdown in\nWTe2 is solely determined by impurity damping in contrast to magnetic breakdown\nscenarios in other metallic systems.\n