%0 Journal Article %1 noauthororeditor %A He, Yangkun %A Gayles, Jacob %A Yao, Mengyu %A Helm, Toni %A Reimann, Tommy %A Strocov, Vladimir N %A Schnelle, Walter %A Nicklas, Michael %A Sun, Yan %A Fecher, Gerhard H %A Felser, Claudia %D 2021 %J Nat. Commun. %K a %P 4576 %R 10.1038/s41467-021-24692-7 %T Large linear non-saturating magnetoresistance and high mobility in ferromagnetic MnBi %U https://www.nature.com/articles/s41467-021-24692-7.pdf %V 12 %X 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.

@article{noauthororeditor, abstract = {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.}, added-at = {2023-03-13T15:41:43.000+0100}, author = {He, Yangkun and Gayles, Jacob and Yao, Mengyu and Helm, Toni and Reimann, Tommy and Strocov, Vladimir N and Schnelle, Walter and Nicklas, Michael and Sun, Yan and Fecher, Gerhard H and Felser, Claudia}, biburl = {https://www.bibsonomy.org/bibtex/2974e6082f477328474407f2b3e47bd0b/ctqmat}, day = 28, description = {Large linear non-saturating magnetoresistance and high mobility in ferromagnetic MnBi }, doi = {10.1038/s41467-021-24692-7}, interhash = {2aaed9462f9281bfefab88a87f4a066f}, intrahash = {974e6082f477328474407f2b3e47bd0b}, journal = {Nat. Commun.}, keywords = {a}, month = {07}, pages = 4576, timestamp = {2024-06-28T17:07:41.000+0200}, title = {Large linear non-saturating magnetoresistance and high mobility in ferromagnetic MnBi}, url = {https://www.nature.com/articles/s41467-021-24692-7.pdf}, volume = 12, year = 2021 }