@article{e2e4c298045543049343cefc6d0cb794,
title = "Exchange-biasing topological charges by antiferromagnetism",
abstract = "Geometric Hall effect is induced by the emergent gauge field experienced by the carriers adiabatically passing through certain real-space topological spin textures, which is a probe to non-trivial spin textures, such as magnetic skyrmions. We report experimental indications of spin-texture topological charges induced in heterostructures of a topological insulator (Bi,Sb)2Te3 coupled to an antiferromagnet MnTe. Through a seeding effect, the pinned spins at the interface leads to a tunable modification of the averaged real-space topological charge. This effect experimentally manifests as a modification of the field-dependent geometric Hall effect when the system is field-cooled along different directions. This heterostructure represents a platform for manipulating magnetic topological transitions using antiferromagnetic order.",
author = "He, {Qing Lin} and Gen Yin and Grutter, {Alexander J.} and Lei Pan and Xiaoyu Che and Guoqiang Yu and Gilbert, {Dustin A.} and Disseler, {Steven M.} and Yizhou Liu and Padraic Shafer and Bin Zhang and Yingying Wu and Kirby, {Brian J.} and Elke Arenholz and Lake, {Roger K.} and Xiaodong Han and Wang, {Kang L.}",
note = "Funding Information: Research was sponsored by the Army Research Office under Grant Numbers W911NF-16-1-0472 and W911NF-15-1-0561:P00001 and the National Key R&D Program of China (Grant No. 2018YFA0305601). The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Office or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation herein. This material is based upon work supported by the National Science Foundation under Grant No. 1611570. The micromagnetic simulation is supported by the Spins and Heat in Nanoscale Electronic Systems (SHINES), an Energy Frontier Research Center funded by the US Department of Energy (DOE), Office of Science, Basic Energy Sciences under Award S000686:03, and the National Science Foundation (DMR-1411085). This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation Grant Number ACI-1053575. Specifically, it used the Darter Cray XC30 system and the Bridges system, which is supported by NSF Award Number ACI-1445606, at the Pittsburgh Supercomputing Center (PSC). This research used resources of the Advanced Light Source, which is a DOE Office of Science User Facility under Contract No. DE-AC02-05CH11231. Q.L. He acknowledges the support from the National Thousand-Young-Talents Program. A.J. Grutter thanks Dr. Julie Borchers and Dr. William Ratcliff II for helpful discussions. Certain commercial equipment, instruments, or materials are identified in this paper to foster understanding. Such identification does not imply recommendation or endorsement by the National Institute of Standards and Technology, nor does it imply that the materials or equipment identified are necessarily the best available for the purpose. Publisher Copyright: {\textcopyright} 2018 The Author(s).",
year = "2018",
month = dec,
day = "1",
doi = "10.1038/s41467-018-05166-9",
language = "English",
volume = "9",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",
}