Anisotropic topological Hall effect with real and momentum space Berry curvature in the antiskrymion-hosting Heusler compound Mn1.4 PtSn
Vir P, Gayles J, Sukhanov AS, Kumar N, Damay F, Sun Y, Kuebler J, Shekhar C, Felser C (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 99
Article Number: 140406
Journal Issue: 14
DOI: 10.1103/PhysRevB.99.140406
Abstract
The topological Hall effect (THE) is one of the key signatures of topologically nontrivial magnetic spin textures, wherein electrons feel an additional transverse voltage to the applied current. The magnitude of THE is often small compared to the anomalous Hall effect. Here, we find a large THE of 0.9μΩcm that is of the same order of the anomalous Hall effect in the single-crystalline antiskyrmion-hosting Heusler compound Mn1.4PtSn, a noncentrosymmetric tetragonal compound. The THE is highly anisotropic and survives in the whole temperature range where the spin structure is noncoplanar (<170 K). The THE is zero above the spin reorientation transition temperature of 170 K, where the magnetization will have a collinear and ferromagnetic alignment. The large value of the THE entails a significant contribution from the momentum-space Berry curvature along with real-space Berry curvature, which has never been observed earlier.
Involved external institutions
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Commissariat à l'énergie atomique
France (FR)
Technische Universität Darmstadt
Germany (DE)
Germany (DE)
Commissariat à l'énergie atomique
France (FR)
Technische Universität Darmstadt
Germany (DE)
How to cite
APA:
Vir, P., Gayles, J., Sukhanov, A.S., Kumar, N., Damay, F., Sun, Y.,... Felser, C. (2019). Anisotropic topological Hall effect with real and momentum space Berry curvature in the antiskrymion-hosting Heusler compound Mn1.4 PtSn. Physical Review B, 99(14). https://doi.org/10.1103/PhysRevB.99.140406
MLA:
Vir, Praveen, et al. "Anisotropic topological Hall effect with real and momentum space Berry curvature in the antiskrymion-hosting Heusler compound Mn1.4 PtSn." Physical Review B 99.14 (2019).
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