Abstract
We investigated magnetotransport properties and charge dynamics of strain-free perovskite SrIrO3. Both the longitudinal and transverse magnetoresistivity (MR) are significantly enhanced with decreasing temperature, in accord with the evolution of the Dirac semimetallic state. The electron correlation effect in the Dirac state shows up as a dramatic change in charge dynamics with temperature and as an enhanced paramagnetic susceptibility. We propose that the field-induced topological transition of the Dirac node coupled to the enhanced paramagnetism causes the unique MR of correlated Dirac electrons.
| Original language | English |
|---|---|
| Article number | 121102 |
| Journal | Physical Review B |
| Volume | 95 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2017 Mar 3 |
| Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Fujioka, J., Okawa, T., Yamamoto, A., & Tokura, Y. (2017). Correlated Dirac semimetallic state with unusual positive magnetoresistance in strain-free perovskite SrIrO3. Physical Review B, 95(12), [121102]. https://doi.org/10.1103/PhysRevB.95.121102