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  Large linear non-saturating magnetoresistance and high mobility in ferromagnetic MnBi

He, Y., Gayles, J., Yao, M., Helm, T., Reimann, T., Strocov, V. N., et al. (2021). Large linear non-saturating magnetoresistance and high mobility in ferromagnetic MnBi. Nature Communications, 12: 4576, pp. 1-7. doi:10.1038/s41467-021-24692-7.

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He, Yangkun1, Autor           
Gayles, Jacob1, Autor           
Yao, Mengyu1, Autor           
Helm, Toni2, Autor           
Reimann, Tommy3, Autor
Strocov, Vladimir N.3, Autor
Schnelle, Walter4, Autor           
Nicklas, Michael5, Autor           
Sun, Yan1, Autor           
Fecher, Gerhard H.6, Autor           
Felser, Claudia7, Autor           
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Physics of Microstructured Quantum Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_2466701              
3External Organizations, ou_persistent22              
4Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
5Michael Nicklas, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863472              
6Gerhard Fecher, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863431              
7Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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Schlagwörter: detection method, dispersion, topology
 Zusammenfassung: A large non-saturating magnetoresistance has been observed in several nonmagnetic topological Weyl semi-metals with high mobility of charge carriers at the Fermi energy. However, ferromagnetic systems rarely display a large magnetoresistance because of localized electrons in heavy d bands with a low Fermi velocity. Here, we report a large linear non-saturating magnetoresistance and high mobility in ferromagnetic MnBi. MnBi, unlike conventional ferromagnets, exhibits a large linear non-saturating magnetoresistance of 5000% under a pulsed field of 70 T. The electrons and holes’ mobilities are both 5000 cm2V−1s−1 at 2 K, which are one of the highest for ferromagnetic materials. These phenomena are due to the spin-polarised Bi 6p band’s sharp dispersion with a small effective mass. Our study provides an approach to achieve high mobility in ferromagnetic systems with a high Curie temperature, which is advantageous for topological spintronics. © 2021, The Author(s).

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Sprache(n): eng - English
 Datum: 2021-07-282021-07-28
 Publikationsstatus: Erschienen
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 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1038/s41467-021-24692-7
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Titel: Nature Communications
  Kurztitel : Nat. Commun.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: London : Nature Publishing Group
Seiten: - Band / Heft: 12 Artikelnummer: 4576 Start- / Endseite: 1 - 7 Identifikator: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723