Document Type

Dataset

Dataset Type

numeric_data

Dataset Product Numbers

None

DEO Contract Number

DE-AC02-07CH11358

Originating Research Organization

Ames Laboratory (AMES), Ames, IA (United States)

Publication/Issue Date

2017

Language

English

Country of Publication

US

Sponsoring Organization(s)

SC-22 USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Subject Categories

36 MATERIALS SCIENCE

Abstract

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.

DOI

https://doi.org/10.1103/PhysRevB.95.195138

Dataset File Extension

.zip

Software needed to utilize dataset

none

Dataset Size

9.3Mb

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