TY  - JOUR
AU  - Sheverdyaeva, P. M.
AU  - Offi, F.
AU  - Gardonio, S.
AU  - Novinec, L.
AU  - Trioni, M. I.
AU  - Ceresoli, D.
AU  - Iacobucci, S.
AU  - Ruocco, A.
AU  - Stefani, G.
AU  - Petaccia, L.
AU  - Gorovikov, S.
AU  - Cappelluti, E.
AU  - Moras, P.
AU  - Bihlmayer, G.
AU  - Blügel, S.
AU  - Carbone, C.
TI  - Topological properties and self-energy effects in elemental Yb
JO  - Physical review / B
VL  - 104
IS  - 19
SN  - 1098-0121
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2021-04379
SP  - 195138
PY  - 2021
AB  - Recent theoretical calculations predict the presence of Dirac nodal lines with π Berry phase and related topological surface states in elemental alkaline-earth metals. Here we provide experimental and theoretical evidence for the existence of similar nodal lines also in hexagonal close-packed Yb, an element of the lanthanide series, in the limit of zero spin-orbit coupling. These topological properties emerge after taking into account self-energy corrections, which permit one to correctly describe the experimental low-energy electronic structure of Yb. By angle-resolved photoemission spectroscopy we demonstrate the occurrence of topological surface states in Yb which are robust in the presence of the large spin-orbit coupling.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000744272400006
DO  - DOI:10.1103/PhysRevB.104.195138
UR  - https://juser.fz-juelich.de/record/902580
ER  -