| Autor: |
Pellatz, Nicholas, Kim, Jungho, Kim, Jong-Woo, Kimchi, Itamar, Cao, Gang, Reznik, Dmitry |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Materials 7, 123802 (2023) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevMaterials.7.123802 |
| Popis: |
It was shown earlier that applying a magnetic field during the growth of Sr$_2$IrO$_4$, also known as "field-alteration", induces significant changes to its structural, magnetic, and transport properties. However, the microscopic nature of these changes is enigmatic. In this study, we employed resonant elastic and inelastic x-ray scattering, as well as Raman scattering, to investigate samples from two batches of Sr$_2$IrO$_4$ grown in magnetic fields of different strengths. Our findings reveal that samples grown in a weaker magnetic field have similar magnetic order to non-altered samples, whereas those grown in a stronger field show a different stacking of weak in-plane ferromagnetic moments. Additionally, we observed significant softening and broadening of select Raman-active phonons in the field altered samples, with a stronger effect in the samples grown in the stronger field. We discuss insights that our results provide into the microscopic nature of field-alteration in Sr$_2$IrO$_4$. |
| Databáze: |
arXiv |
| Externí odkaz: |
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