SciPost Submission Page
Sixfold fermion near the Fermi level in cubic PtBi2
by S. Thirupathaiah, Y. S. Kushnirenk, K. Koepernik, B. R. Piening, B. Buechner, S. Aswartham, J. van den Brink, S. V. Borisenko, I. C. Fulga
This Submission thread is now published as
|Authors (as Contributors):||Ion Cosma Fulga · Setti Thirupathaiah · Jeroen van den Brink|
|Date submitted:||2020-11-03 15:52|
|Submitted by:||Fulga, Ion Cosma|
|Submitted to:||SciPost Physics|
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,  direction. Our results mark cubic PtBi2, as an ideal candidate to study the transport properties of gapless topological systems beyond Dirac and Weyl semimetals.
Published as SciPost Phys. 10, 004 (2021)
Author comments upon resubmission
List of changes
Text changes are marked in red.
- We have marked the theoretical calculations with the `theory' label in Figs. 1-4.
- We have added arrows to Figs. 1 and 2, pointing to the features mentioned in the main text.
- We have added a new panel in Fig. 2, showing a side-by-side comparison of Brillouin zones at different energies.
- We have replaced the crosses with arrows in Fig. 4.
- On page 6, before the Conclusion section, we have added a sentence pointing to our uploaded code. The latter confirms the Weyl nature of the band crossing points.
Submission & Refereeing History
You are currently on this page
Reports on this Submission
Anonymous Report 2 on 2020-11-23 (Invited Report)
The authors have addressed my comments and therefore I recommend the manuscript for publication.
Anonymous Report 1 on 2020-11-19 (Invited Report)
I find the revisions and response of the authors to all reports satisfactory and I'm happy to recommend publication of this manuscript.