%0 Journal Article %1 noauthororeditor %A Ibarra, Rebeca %A Lesne, Edouard %A Sabir, Bushra %A Gayles, Jacob %A Felser, Claudia %A Markou, Anastasios %D 2022 %I ohn Wiley & Sons, Ltd %J Adv. Mater. Interfaces %K a %N 36 %P 2201562 %R 10.1002/admi.202201562 %T Anomalous Hall effect in epitaxial thin films of the hexagonal Heusler MnPtGa noncollinear hard magnet %U https://doi.org/10.1002/admi.202201562 %V 9 %X Materials hosting noncollinear magnetic ordering and sizeable spin-orbit cou-pling can manifest perpendicular magnetic anisotropy and a Berry curvature-driven intrinsic anomalous Hall effect. In this work, the structural, magnetic, and magnetotransport properties of crystalline hexagonal Heusler MnPtGa epitaxial thin films are reported. The centrosymmetric MnPtGa films (P63/mmcspace group) crystallize with a preferred c-axis (0001) crystal orientation. Along this crystallographic direction, the MnPtGa films exhibit preferential perpendic-ular magnetic anisotropy, below the Curie temperature TC= 263 K, with a large effective uniaxial magnetic anisotropy Keff= 0.735 MJ m−3, at 150 K. In addition, the MnPtGa system undergoes a thermally induced spin reorientation transition below Tsr= 160 K, which marks the onset of a noncollinear spin-canted state. The anomalous Hall conductivity (AHC) of MnPtGa films exhibits a nonmono-tonic behavior as a function of temperature, which changes sign at T*= 110 K. Concurrently with the reported unusual dependence of the AHC on the longitu-dinal conductivity in MnPtGa crystalline thin films, these findings strongly sug-gest an anomalous Hall effect of intrinsic origin, driven by a momentum-space Berry curvature mechanism, as supported by first-principle calculations

@article{noauthororeditor, abstract = {Materials hosting noncollinear magnetic ordering and sizeable spin-orbit cou-pling can manifest perpendicular magnetic anisotropy and a Berry curvature-driven intrinsic anomalous Hall effect. In this work, the structural, magnetic, and magnetotransport properties of crystalline hexagonal Heusler MnPtGa epitaxial thin films are reported. The centrosymmetric MnPtGa films (P63/mmcspace group) crystallize with a preferred c-axis (0001) crystal orientation. Along this crystallographic direction, the MnPtGa films exhibit preferential perpendic-ular magnetic anisotropy, below the Curie temperature TC= 263 K, with a large effective uniaxial magnetic anisotropy Keff= 0.735 MJ m−3, at 150 K. In addition, the MnPtGa system undergoes a thermally induced spin reorientation transition below Tsr= 160 K, which marks the onset of a noncollinear spin-canted state. The anomalous Hall conductivity (AHC) of MnPtGa films exhibits a nonmono-tonic behavior as a function of temperature, which changes sign at T*= 110 K. Concurrently with the reported unusual dependence of the AHC on the longitu-dinal conductivity in MnPtGa crystalline thin films, these findings strongly sug-gest an anomalous Hall effect of intrinsic origin, driven by a momentum-space Berry curvature mechanism, as supported by first-principle calculations}, added-at = {2023-06-15T14:57:07.000+0200}, author = {Ibarra, Rebeca and Lesne, Edouard and Sabir, Bushra and Gayles, Jacob and Felser, Claudia and Markou, Anastasios}, biburl = {https://www.bibsonomy.org/bibtex/222ebd84a289b3cd191f34aa51b634f18/ctqmat}, day = 09, description = {Anomalous Hall effect in epitaxial thin films of the hexagonal Heusler MnPtGa noncollinear hard magnet}, doi = {10.1002/admi.202201562}, interhash = {525320532169f675f3f97066bfdecc40}, intrahash = {22ebd84a289b3cd191f34aa51b634f18}, issn = {2196-7350}, journal = {Adv. Mater. Interfaces}, keywords = {a}, month = {11}, number = 36, pages = 2201562, publisher = {ohn Wiley & Sons, Ltd}, timestamp = {2023-10-16T07:48:59.000+0200}, title = {Anomalous Hall effect in epitaxial thin films of the hexagonal Heusler MnPtGa noncollinear hard magnet}, url = {https://doi.org/10.1002/admi.202201562}, volume = 9, year = 2022 }