Abstract
We report on measurements of the anisotropic magnetoresistance (AMR) of doped EuTiO3. It is shown that the primary contribution to the AMR is the crystalline component, which depends on the relative orientation between the magnetic moments and the crystal axes. With increasing magnetic field, a fourfold crystalline AMR undergoes a change in its alignment with respect to the crystal axes. The results are discussed in the context of the coupling between spin canting, electronic structure, and transport. We discuss the potential role of Weyl points in the band structure. At high fields, the AMR transitions to uniaxial symmetry, which is lower than that of the lattice, along with a crossover from positive to negative magnetoresistance.
| Original language | English (US) |
|---|---|
| Article number | 041106 |
| Journal | Physical Review B |
| Volume | 99 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jan 7 2019 |
Funding
The authors gratefully acknowledge discussions with Leon Balents and Libor Šmejkal. The authors acknowledge support by the National Science Foundation (Grants No. 1729303 and No. 1729489) and by a MURI program of the Army Research Office (Grant No. W911NF-16-1-0361). The work made use of the MRL Shared Experimental Facilities, which are supported by the MRSEC Program of the US National Science Foundation under Award No. DMR 1720256. The authors acknowledge support by the National Science Foundation (Grants No. 1729303 and No. 1729489) and by a MURI program of the Army Research Office (Grant No. W911NF-16-1-0361). The work made use of the MRL Shared Experimental Facilities, which are supported by the MRSEC Program of the US National Science Foundation under Award No. DMR 1720256.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics