Observation of large intrinsic anomalous Hall conductivity in polycrystalline Mn$_3$Sn films
| Autor: | Zengji Yue, Zhi Li, Michael S. Fuhrer, Wafa Afzal, Xiaolin Wang |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
Materials science
Condensed matter physics Spintronics Magnetoresistance Condensed Matter - Mesoscale and Nanoscale Physics education FOS: Physical sciences General Chemistry Conductivity Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Condensed Matter::Materials Science Hysteresis Ferromagnetism Electrical resistivity and conductivity Hall effect Condensed Matter::Superconductivity Mesoscale and Nanoscale Physics (cond-mat.mes-hall) General Materials Science Thin film psychological phenomena and processes |
| Popis: | Topological antiferromagnets have a significant role to play in the modern day electronics and spintronics due to the presence of peculiar symmetries and magnetically driven large anomalous transport behaviour. We report the observation of anomalous Hall effect in Mn3Sn polycrystalline thin films deposited on Al2O3 substrate with a large anomalous Hall conductivity of 65 (Ωcm)−1 at 3 K. The Hall and magnetic measurements show a very small hysteresis owing to a weak ferromagnetic moment present in this material. The longitudinal resistivity decreases sufficiently for the thin films as compared to the polycrystalline bulk sample used as the target for the film deposition. The anomalous Hall resistivity and conductivity decreases almost linearly with the increase in the temperature. A negative magnetoresistance is observed for all the measured temperatures with the negative decrease in the magnitude with the increase in temperature. |
| Databáze: | OpenAIRE |
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