TY - JOUR
T1 - Topological Magnetic Phase in the Candidate Weyl Semimetal CeAlGe
AU - Puphal, Pascal
AU - Pomjakushin, Vladimir
AU - Kanazawa, Naoya
AU - Ukleev, Victor
AU - Gawryluk, Dariusz J.
AU - Ma, Junzhang
AU - Naamneh, Muntaser
AU - Plumb, Nicholas C.
AU - Keller, Lukas
AU - Cubitt, Robert
AU - Pomjakushina, Ekaterina
AU - White, Jonathan S.
N1 - Funding Information:
V. P. thanks V. Markushin for helpful discussions. J. S. W. acknowledges discussions with A. G. Grushin and T. Neupert. Funding from the Swiss National Science Foundation (SNSF) REquip Grants No. 206021_163997 and No. 206021_139082, SNSF Projects No. 200021_159678 and No. 200021_188707, and the SNSF Sinergia network NanoSkyrmionics (Grant No. CRSII5_171003) is gratefully acknowledged. This work is based on experiments performed at the Swiss spallation neutron source (SINQ) and the Swiss Light Source (SLS), located at the Paul Scherrer Institute, Villigen, Switzerland, and the Institut Laue-Langevin (ILL), Grenoble, France. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skodowska-Curie Grant No. 701647. The open access fee was covered by FILL2030, a European Union project within the European Commission’s Horizon 2020 Research and Innovation programme under grant Agreement No. 731096.
Publisher Copyright:
© 2020 authors. Published by the American Physical Society.
PY - 2020/1/7
Y1 - 2020/1/7
N2 - We report the discovery of topological magnetism in the candidate magnetic Weyl semimetal CeAlGe. Using neutron scattering we find this system to host several incommensurate, square-coordinated multi-k→ magnetic phases below TN. The topological properties of a phase stable at intermediate magnetic fields parallel to the c axis are suggested by observation of a topological Hall effect. Our findings highlight CeAlGe as an exceptional system for exploiting the interplay between the nontrivial topologies of the magnetization in real space and Weyl nodes in momentum space.
AB - We report the discovery of topological magnetism in the candidate magnetic Weyl semimetal CeAlGe. Using neutron scattering we find this system to host several incommensurate, square-coordinated multi-k→ magnetic phases below TN. The topological properties of a phase stable at intermediate magnetic fields parallel to the c axis are suggested by observation of a topological Hall effect. Our findings highlight CeAlGe as an exceptional system for exploiting the interplay between the nontrivial topologies of the magnetization in real space and Weyl nodes in momentum space.
UR - http://www.scopus.com/inward/record.url?scp=85078309146&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.124.017202
DO - 10.1103/PhysRevLett.124.017202
M3 - Article
C2 - 31976692
AN - SCOPUS:85078309146
SN - 0031-9007
VL - 124
JO - Physical Review Letters
JF - Physical Review Letters
IS - 1
M1 - 017202
ER -