Sixfold fermion near the Fermi level in cubic PtBi2
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 t...
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| Format: | Article |
| Language: | English |
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SciPost
2021-01-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.10.1.004 |
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doaj-3c2f5f5213744496abe1a32b7848d5d62021-04-19T12:32:36ZengSciPostSciPost Physics2542-46532021-01-0110100410.21468/SciPostPhys.10.1.004Sixfold fermion near the Fermi level in cubic PtBi2S. Thirupathaiah, Y. S. Kushnirenk, K. Koepernik, B. R. Piening, B. Buechner, S. Aswartham, J. van den Brink, S. V. Borisenko, I. C. FulgaWe 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.https://scipost.org/SciPostPhys.10.1.004 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
S. Thirupathaiah, Y. S. Kushnirenk, K. Koepernik, B. R. Piening, B. Buechner, S. Aswartham, J. van den Brink, S. V. Borisenko, I. C. Fulga |
| spellingShingle |
S. Thirupathaiah, Y. S. Kushnirenk, K. Koepernik, B. R. Piening, B. Buechner, S. Aswartham, J. van den Brink, S. V. Borisenko, I. C. Fulga Sixfold fermion near the Fermi level in cubic PtBi2 SciPost Physics |
| author_facet |
S. Thirupathaiah, Y. S. Kushnirenk, K. Koepernik, B. R. Piening, B. Buechner, S. Aswartham, J. van den Brink, S. V. Borisenko, I. C. Fulga |
| author_sort |
S. Thirupathaiah, Y. S. Kushnirenk, K. Koepernik, B. R. Piening, B. Buechner, S. Aswartham, J. van den Brink, S. V. Borisenko, I. C. Fulga |
| title |
Sixfold fermion near the Fermi level in cubic PtBi2 |
| title_short |
Sixfold fermion near the Fermi level in cubic PtBi2 |
| title_full |
Sixfold fermion near the Fermi level in cubic PtBi2 |
| title_fullStr |
Sixfold fermion near the Fermi level in cubic PtBi2 |
| title_full_unstemmed |
Sixfold fermion near the Fermi level in cubic PtBi2 |
| title_sort |
sixfold fermion near the fermi level in cubic ptbi2 |
| publisher |
SciPost |
| series |
SciPost Physics |
| issn |
2542-4653 |
| publishDate |
2021-01-01 |
| description |
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. |
| url |
https://scipost.org/SciPostPhys.10.1.004 |
| work_keys_str_mv |
AT sthirupathaiahyskushnirenkkkoepernikbrpieningbbuechnersaswarthamjvandenbrinksvborisenkoicfulga sixfoldfermionnearthefermilevelincubicptbi2 |
| _version_ |
1721521162863771648 |