Singular angular magnetoresistance in a magnetic nodal semimetal
Abstract
Interplay between real- and momentum-space properties of materials can lead to exotic phenomena. Suzuki et al. studied electrical transport in the presence of a magnetic field in cerium-aluminum-germanium, a Weyl semimetal that also harbors magnetism (see the Perspective by Hassinger and Meng). As they varied the orientation of the applied field, they noticed spikes of resistivity sharply centered around the high symmetry axes of the material. The spikes were a consequence of the small overlap of Fermi surfaces—which “live” in momentum space—on either side of magnetic domain walls, which occur in real space. This extreme angular sensitivity may be useful in practical applications.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 26, 2019
- Source ID
- 10.1126/science.aat0348
Entities
People
- J.-p. Liu
- Jeffrey W. Lynn
- Joseph G Checkelsky
- L. Balents
- Lucile Savary
- Takehito Suzuki
Organizations
- Army Research Office
- Gordon and Betty Moore Foundation
- Hong Kong University of Science and Technology
- Massachusetts Institute of Technology
- National Institute of Standards and Technology
- National Science Foundation
- University of California
- University of Lyon