%0 Journal Article %1 Thirupathaiah_2021 %A Thirupathaiah, Setti %A Kushnirenk, Y. S. %A Koepernik, Klaus %A Piening, B. R. %A Büchner, Bernd %A Aswartham, S. %A van den Brink, Jeroen %A Borisenko, Sergey %A Fulga, Ion Cosma %D 2021 %I Stichting SciPost %J SciPost Phys. %K a b %N 1 %P 004 %R 10.21468/scipostphys.10.1.004 %T Sixfold fermion near the Fermi level in cubic PtBi$_2$ %U https://doi.org/10.21468%2Fscipostphys.10.1.004 %V 10 %X We show that the cubic compound PtBi2, is a topological semimetal hosting a sixfold band touching point in close proximity to the Fermi level. Using angle-resolved photoemission spectroscopy, we map the bandstructure of the system, which is in good agreement with results from density functional theory. Further, by employing a low energy effective Hamiltonian valid close to the crossing point, we study the effect of a magnetic field on the sixfold fermion. The latter splits into a total of twenty Weyl cones for a Zeeman field oriented in the diagonal, 111 direction. Our results mark cubic PtBi2, as an ideal candidate to study the transport properties of gapless topological systems beyond Dirac and Weyl semimetals.

@article{Thirupathaiah_2021, abstract = {We show that the cubic compound PtBi2, is a topological semimetal hosting a sixfold band touching point in close proximity to the Fermi level. Using angle-resolved photoemission spectroscopy, we map the bandstructure of the system, which is in good agreement with results from density functional theory. Further, by employing a low energy effective Hamiltonian valid close to the crossing point, we study the effect of a magnetic field on the sixfold fermion. The latter splits into a total of twenty Weyl cones for a Zeeman field oriented in the diagonal, [111] direction. Our results mark cubic PtBi2, as an ideal candidate to study the transport properties of gapless topological systems beyond Dirac and Weyl semimetals.}, added-at = {2023-07-03T11:21:01.000+0200}, author = {Thirupathaiah, Setti and Kushnirenk, Y. S. and Koepernik, Klaus and Piening, B. R. and Büchner, Bernd and Aswartham, S. and van den Brink, Jeroen and Borisenko, Sergey and Fulga, Ion Cosma}, biburl = {https://www.bibsonomy.org/bibtex/2bc6508e85c7ff32602bf55c42c5f2bbf/ctqmat}, day = 11, description = {SciPost: SciPost Phys. 10, 004 (2021) - Sixfold fermion near the Fermi level in cubic PtBi2}, doi = {10.21468/scipostphys.10.1.004}, interhash = {b723c6cb259e5492b30246c58579ce5b}, intrahash = {bc6508e85c7ff32602bf55c42c5f2bbf}, journal = {SciPost Phys.}, keywords = {a b}, month = {01}, number = 1, pages = 004, publisher = {Stichting SciPost}, timestamp = {2023-10-19T10:31:54.000+0200}, title = {Sixfold fermion near the Fermi level in cubic PtBi$_{\mathbf{2}}$}, url = {https://doi.org/10.21468%2Fscipostphys.10.1.004}, volume = 10, year = 2021 }