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  Stability of Weyl points in magnetic half-metallic Heusler compounds

Chadov, S., Wu, S.-C., Felser, C., & Galanakis, I. (2017). Stability of Weyl points in magnetic half-metallic Heusler compounds. Physical Review B, 96(2): 024435, pp. 1-5. doi:10.1103/PhysRevB.96.024435.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-17C8-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-17CC-8
Genre: Journal Article

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 Creators:
Chadov, Stanislav1, Author              
Wu, Shu-Chun2, Author              
Felser, Claudia3, Author              
Galanakis, Iosif4, Author
Affiliations:
1Stanislav Chadov, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, escidoc:1863440              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, escidoc:1863425              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, escidoc:1863429              
4External Organizations, escidoc:persistent22              

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 Abstract: We employ ab initio fully relativistic electronic structure calculations to study the stability of the Weyl points in the momentum space within the class of the half-metallic ferromagnetic full Heusler materials, by focusing on Co2TiAl as a well-established prototype compound. Here we show that both the number of the Weyl points together with their k-space coordinates can be controlled by the orientation of the magnetization. This alternative degree of freedom, which is absent in other topological materials (e.g., in Weyl semimetals), introduces functionalities that are specific for the class of half-metallic ferromagnets. Of special interest are crossing points which are preserved irrespective of any arbitrary rotation of the magnetization axis.

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Language(s): eng - English
 Dates: 2017-07-242017-07-24
 Publication Status: Published in print
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 96 (2) Sequence Number: 024435 Start / End Page: 1 - 5 Identifier: ISSN: 1098-0121
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925225008