AI Article Synopsis
- We conducted x-ray magnetic circular dichroism (XMCD) studies on heterostructures made of topological insulators and the magnetic insulator EuS, focusing on the interface between them.
- Our analysis showed no substantial induced magnetism in the topological insulators or any increase in magnetic moments from Eu at the interface.
- The magnetic moments detected in the Bi, Sb, Te, and Se sites were below the XMCD detection limit of approximately 10^{-3} μ_{B}/at.
Article Abstract
We performed x-ray magnetic circular dichroism (XMCD) measurements on heterostructures comprising topological insulators (TIs) of the (Bi,Sb)_{2}(Se,Te)_{3} family and the magnetic insulator EuS. XMCD measurements allow us to investigate element-selective magnetic proximity effects at the very TI/EuS interface. A systematic analysis reveals that there is neither significant induced magnetism within the TI nor an enhancement of the Eu magnetic moment at such interface. The induced magnetic moments in Bi, Sb, Te, and Se sites are lower than the estimated detection limit of the XMCD measurements of ∼10^{-3} μ_{B}/at.
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| http://dx.doi.org/10.1103/PhysRevLett.125.226801 | DOI Listing |
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