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@INPROCEEDINGS{Singh:1046495,
author = {Singh, Ankita},
title = {{S}train vs. {S}pin-{O}rbit {C}oupling: {T}uning
{I}nterfacial {M}agnetism in {S}r{R}u{O}3 {T}hin {F}ilms and
{M}ultilayers},
reportid = {FZJ-2025-03834},
year = {2025},
abstract = {Interfacial magnetism in complex oxide heterostructures
provides a powerful platform to uncover emergent phenomena
driven by strain, spin-orbit coupling (SOC), and broken
inversion symmetry. In this talk, I will present two
complementary studies on SrRuO3 (SRO)-based heterostructures
that highlight different pathways to engineer interfacial
magnetism. In the first part, I discuss strain-driven
effects in SRO thin films grown on SrTiO3 (STO) and
STO-buffered Si substrates. Structural and magnetic
measurements reveal contrasting anisotropies: out-of-plane
for SRO/STO and in-plane for SRO/STO/Si, while transport
data indicate the presence of anomalous Hall effect (AHE)
humps linked to multiple magnetic domains rather than a
topological Hall effect (THE). In the second part, I focus
on SRO/SrIrO3 (SIO) multilayers, where the strong SOC of SIO
and broken inversion symmetry at the interface generate
Dzyaloshinskii-Moriya interaction (DMI). These multilayers
exhibit layer-dependent magnetization, anisotropic
magnetoresistance, and signatures of an additional Hall
contribution consistent with THE, after subtracting the AHE
background. Together, these results emphasize how strain and
SOC provide distinct routes to control interfacial magnetism
in SRO systems. I will conclude by outlining future
depth-resolved polarized neutron reflectometry (PNR) studies
and magnetic force microscopy (MFM) imaging to directly
probe the spatial magnetization profile and interfacial spin
textures in these heterostructures.},
organization = {(Digital) Institute Seminar JCNS-2,
Forschungszentrum Jülich, JCNS
(Germany)},
subtyp = {Invited},
cin = {JCNS-2 / JARA-FIT},
cid = {I:(DE-Juel1)JCNS-2-20110106 / $I:(DE-82)080009_20140620$},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (FZJ) (POF4-6G4)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
typ = {PUB:(DE-HGF)31},
url = {https://juser.fz-juelich.de/record/1046495},
}