| Autor: |
Sung, N. H., Ronning, F., Thompson, J. D., Bauer, E. D. |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Appl. Phys. Lett. 112, 132406 (2018) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1063/1.5021133 |
| Popis: |
Thermodynamic and transport properties are reported on single crystals of the hexagonal antiferromagnet Mn$_3$Sn grown by the Sn flux technique. Magnetization measurements reveal two magnetic phase transitions at $T_1$ = 275 K and $T_2$ = 200 K, below the antiferromagnetic phase transition at $T_N$ $\approx$ 420 K. The Hall conductivity in zero magnetic field is suppressed dramatically from 4.7 $\Omega^{-1}$cm$^{-1}$ to near zero below $T_1$, coincident with the vanishing of the weak ferromagnetic moment. This illustrates that the large anomalous Hall effect (AHE) arising from the Berry curvature can be switched on and off by a subtle change in the symmetry of the magnetic structure near room temperature. |
| Databáze: |
arXiv |
| Externí odkaz: |
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