TY  - JOUR
AU  - Sánchez-Barriga, J.
AU  - Vergniory, M. G.
AU  - Evtushinsky, D.
AU  - Aguilera, I.
AU  - Varykhalov, A.
AU  - Blügel, S.
AU  - Rader, O.
TI  - Surface Fermi arc connectivity in the type-II Weyl semimetal candidate WTe$_{2}$
JO  - Physical review / B
VL  - 94
IS  - 16
SN  - 2469-9950
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2016-05837
SP  - 161401
PY  - 2016
AB  - We perform ultrahigh-resolution angle-resolved photoemission experiments at a temperature T=0.8 K on the type-II Weyl semimetal candidate WTe2. We find a surface Fermi arc connecting the bulk electron and hole pockets on the (001) surface. Our results show that the surface Fermi arc connectivity to the bulk bands is strongly mediated by distinct surface resonances dispersing near the border of the surface-projected bulk band gap. By comparing the experimental results to first-principles calculations, we argue that the coupling to these surface resonances, which are topologically trivial, is compatible with the classification of WTe2 as a type-II Weyl semimetal hosting topological Fermi arcs. We further support our conclusion by a systematic characterization of the bulk and surface character of the different bands and discuss the similarity of our findings to the case of topological insulators.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000385243700001
DO  - DOI:10.1103/PhysRevB.94.161401
UR  - https://juser.fz-juelich.de/record/820557
ER  -