Year: 2019
Type: article
Abstract: Magnetic domain walls are topological solitons whose internal structure is set by competing energies which sculpt them. In common ferromagnets, domain walls are known to be of either Bloch or Néel types. Little is established in the case of Mn3Sn, a triangular antiferromagnet with a large room-temperature anomalous Hall effect, where domain nucleation is triggered by a well-defined threshold magnetic field. Here, we show that the domain walls of this system generate an additional contribution to the Hall conductivity tensor and a transverse magnetization. The former is an electric field lying in the same plane with the magnetic field and electric current and therefore a planar Hall effect. We demonstrate that in-plane rotation of spins inside the domain wall would explain both observations and the clockwise or anticlockwise chirality of the walls depends on the history of the field orientation and can be controlled.
Source: Nature Communications
Authors: Xiaokang Li, Clément Collignon, Liangcai Xu, Huakun Zuo, Antonella Cavanna, Ulf Gennser, Dominique Mailly, Benoît Fauqué, Leon Balents, Zengwei Zhu, Kamran Behnia
Institutions: Centre National de la Recherche Scientifique, Université Paris Sciences et Lettres, Laboratoire de Physique et d’Étude des Matériaux, Huazhong University of Science and Technology, ESPCI Paris, Collège de France, Jeunes équipes de l'Institut de Physique du Collège de France, Université Paris-Saclay, Centre de Nanosciences et de Nanotechnologies, University of California, Santa Barbara, Kavli Institute for Theoretical Physics, University of Cologne
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $5,200
Funders: National Science Foundation, Agence Nationale de la Recherche, National Natural Science Foundation of China, École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris, China Scholarship Council, National Key Research and Development Program of China, Fundamental Research Funds for the Central Universities, Thousand Young Talents Program of China, Division of Materials Research
OpenAlex ID: W2958486366