English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Chiral topological semimetal with multifold band crossings and long Fermi arcs

Schröter, N. B. M., Pei, D., Vergniory, M. G., Sun, Y., Manna, K., de Juan, F., et al. (2019). Chiral topological semimetal with multifold band crossings and long Fermi arcs. Nature Physics, 15, 759-765. doi:10.1038/s41567-019-0511-y.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Schröter, Niels B. M.1, Author
Pei, Ding1, Author
Vergniory, Maia G.1, Author
Sun, Yan2, Author           
Manna, Kaustuv2, Author           
de Juan, Fernando1, Author
Krieger, Jonas A.1, Author
Süß, Vicky2, Author           
Schmidt, Marcus3, Author           
Dudin, Pavel1, Author
Bradlyn, Barry1, Author
Kim, Timur K.1, Author
Schmitt, Thorsten1, Author
Cacho, Cephise1, Author
Felser, Claudia4, Author           
Strocov, Vladimir N.1, Author
Chen, Yulin1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Marcus Schmidt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863415              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

Content

show
hide
Free keywords: -
 Abstract: Topological semimetals in crystals with a chiral structure (which possess a handedness due to a lack of mirror and inversion symmetries) are expected to display numerous exotic physical phenomena, including fermionic excitations with large topological charge 1 , long Fermi arc surface states 2,3 , unusual magnetotransport 4 and lattice dynamics 5 , as well as a quantized response to circularly polarized light 6 . So far, all experimentally confirmed topological semimetals exist in crystals that contain mirror operations, meaning that these properties do not appear. Here, we show that AlPt is a structurally chiral topological semimetal that hosts new four-fold and six-fold fermions, which can be viewed as a higher spin generalization of Weyl fermions without equivalence in elementary particle physics. These multifold fermions are located at high symmetry points and have Chern numbers larger than those in Weyl semimetals, thus resulting in multiple Fermi arcs that span the full diagonal of the surface Brillouin zone. By imaging these long Fermi arcs, we experimentally determine the magnitude and sign of their Chern number, allowing us to relate their dispersion to the handedness of their host crystal. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.

Details

show
hide
Language(s): eng - English
 Dates: 2019-05-062019-05-06
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1038/s41567-019-0511-y
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Nature Physics
  Other : Nat. Phys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: London : Nature Pub. Group
Pages: - Volume / Issue: 15 Sequence Number: - Start / End Page: 759 - 765 Identifier: ISSN: 1745-2473
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000025850