Publication date: Sep 13, 2021
The magnetic and electronic nature of the γ-Al2O3/SrTiO3 spinel/perovskite interface is explored by means of x-ray absorption spectroscopy. Polarized x-ray techniques combined with atomic multiplet calculations reveal localized magnetic moments assigned to Ti3+ at the interface with equivalent size for in- and out-of-plane magnetic field directions. Although magnetic fingerprints are revealed, the Ti3+ magnetism can be explained by a paramagnetic response at low temperature under applied magnetic fields. Modeling the x-ray linear dichroism results in a Delta0 ∼ 1.9 eV splitting between the t2g and eg states for the Ti4+ 3d0 orbitals. In addition these results indicate that the lowest energy states have the out-of-plane dxz/dyz symmetry. The isotropic magnetic moment behavior and the lowest energy dxz/dyz states are in contrast to the observations for the two-dimensional electron gas at the perovskite/perovskite interface of LaAlO3/SrTiO3 that exhibits an anisotropic magnetic dxy ground state.
No Explore or Discover sections associated with this archive record.
File name | Size | Description |
---|---|---|
README.txt
MD5md5:e4d61a022ca8a4d40ef1e537fdef9d87
|
1.2 KiB | Description of ZIP-archive contents in the folders and subfolders. |
GAO_data.zip
MD5md5:30ebb9d569f10833e6d7360838ea9f92
|
11.9 MiB | All experimental data and simulations presented in the manuscript. See README.txt for further information. |
2021.147 (version v1) [This version] | Sep 13, 2021 | DOI10.24435/materialscloud:xx-et |