Anisotropic magnetoresistance in the itinerant antiferromagnetic EuTi O3

Kaveh Ahadi, Xuezeng Lu, Salva Salmani-Rezaie, Patrick B. Marshall, James M. Rondinelli, Susanne Stemmer

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

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 languageEnglish (US)
Article number041106
JournalPhysical Review B
Volume99
Issue number4
DOIs
StatePublished - Jan 7 2019

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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