Dataset Product Numbers
DEO Contract Number
Originating Research Organization
Ames Laboratory (AMES), Ames, IA (United States)
Country of Publication
SC-22 USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
36 MATERIALS SCIENCE
We use temperature- and field-dependent resistivity measurements (Shubnikov–de Haas quantum oscillations) and ultrahigh-resolution, tunable, vacuum ultraviolet laser-based angle-resolved photoemission spectroscopy (ARPES) to study the three-dimensionality (3D) of the bulk electronic structure in WTe2, a type II Weyl semimetal. The bulk Fermi surface (FS) consists of two pairs of electron pockets and two pairs of hole pockets along the X−Γ−X direction as detected by using an incident photon energy of 6.7 eV, which is consistent with the previously reported data. However, if using an incident photon energy of 6.36 eV, another pair of tiny electron pockets is detected on both sides of the Γ point, which is in agreement with the small quantum oscillation frequency peak observed in the magnetoresistance. Therefore, the bulk, 3D FS consists of three pairs of electron pockets and two pairs of hole pockets in total. With the ability of fine tuning the incident photon energy, we demonstrate the strong three-dimensionality of the bulk electronic structure in WTe2. The combination of resistivity and ARPES measurements reveals the complete, and consistent, picture of the bulk electronic structure of this material.
Dataset File Extension
Software needed to utilize dataset
Wu, Yun; Jo, Na Hyun; Mou, Daixiang; Huang, Lunan; Bud'ko, Sergey L.; Canfield, Paul C.; and Kaminski, Adam, "Three-dimensionality of the Bulk Electronic Structure in WTe2" (2017). Ames Laboratory Datasets. 8.