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  Chemical disorder as an engineering tool for spin polarization in Mn3Ga-based Heusler systems

Chadov, S., D'Souza, S. W., Wollmann, L., Kiss, J., Fecher, G. H., & Felser, C. (2015). Chemical disorder as an engineering tool for spin polarization in Mn3Ga-based Heusler systems. Physical Review B, 91(9): 094203, pp. 1-8. doi:10.1103/PhysRevB.91.094203.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0026-B61F-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-69EB-1
Genre: Journal Article

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 Creators:
Chadov, S.1, Author              
D'Souza, S. W.2, Author              
Wollmann, L.3, Author              
Kiss, J.2, Author              
Fecher, G. H.4, Author              
Felser, C.5, Author              
Affiliations:
1Stanislav Chadov, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863440              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
4Gerhard Fecher, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863431              
5Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: Our study highlights spin-polarization mechanisms in metals by focusing on the mobilities of conducting electrons with different spins instead of their quantities. Here, we engineer electron mobility by applying chemical disorder induced by nonstoichiometric variations. As a practical example, we discuss the scheme that establishes such variations in tetragonal Mn3Ga Heusler material. We justify this approach using first-principles calculations of the spin-projected conductivity components based on the Kubo-Greenwood formalism. It follows that, in the majority of cases, even a small substitution of some other transition element instead of Mn may lead to a substantial increase in spin polarization along the tetragonal axis.

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 Dates: 2015-03-112015-04-14
 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: 91 (9) Sequence Number: 094203 Start / End Page: 1 - 8 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008