O'Neill, CD;
Wills, AS;
Huxley, AD;
(2019)
Possible topological contribution to the anomalous Hall effect of the noncollinear ferromagnet Fe3Sn2.
Physical Review B
, 100
(17)
, Article 174420. 10.1103/PhysRevB.100.174420.
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Abstract
The magnetization, magnetoresistance, and Hall effect of the kagome structured material Fe 3 Sn 2 is reported for high-quality single crystals. Previous investigations of Fe 3 Sn 2 polycrystals detected ferromagnetism at T c ≈ 657 K with moments along the easy c axis and a moment rotation towards the a − b plane upon cooling that culminates in moments freezing to form a spin glass at T F ≈ 80 K . The results presented here for single crystals show the lower value of T F = 70 ± 2.5 K , most likely due to the increased sample quality. Above T F we identify a topological contribution to the Hall resistivity coinciding with an anomalous magnetoresistance. This supports recent proposals that the magnetic structure contains magnetic skyrmions in this temperature range.
| Type: | Article |
|---|---|
| Title: | Possible topological contribution to the anomalous Hall effect of the noncollinear ferromagnet Fe3Sn2 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.100.174420 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.100.174420 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10087040 |
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