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@INPROCEEDINGS{Lan:1044270,
author = {Lan, Qianqian and Schnedler, Michael and Freter, Lars and
Wang, Chuanshou and Fischer, Kurt and Dunin-Borkowski, Rafal
and Ebert, Philipp},
title = {{E}lectrostatic {E}xtension of {M}agnetic {P}roximity
{E}ffect in {L}a0.7{S}r0.4{M}n{O}3},
reportid = {FZJ-2025-03140},
year = {2025},
abstract = {Many fascinating magnetic effects emerge at interfaces
between layers with different magnetic orders. Interface
confinement is intimately related to the magnetic proximity
effect, which typically has a spatial extent of only a few
atomic layers. This short extent is due to the underlying
physical coupling mechanisms, such as the exchange
interaction, the Dzyaloshinsky-Moriya interaction, interface
states, rehybridization, and reconstruction, all of which
are highly localized. We use off-axis electron holography to
reveal an exceptionally long-range magnetic proximity effect
reaching ∼40 nm at a ferromagnetic (FM)/ paramagnetic (PM)
interface in La0.7Sr0.3MnO3 (LSMO). This wide extent arises
from carrier diffusion and drift across the interface, which
changes the Mn3+/Mn4+ ratio and thereby the density of
magnetic moments and local Curie temperature. We determine
the carrier concentration dependence of the Curie
temperature and unravel the physical mechanism of the
electrostatic extension of magnetic proximity effects,
fundamentally reshaping our understanding of micromagnetism
inperovskites.},
month = {Jan},
date = {2025-01-19},
organization = {50th Conference on the Physics and
Chemistry of Surfaces and Interfaces,
Kona (USA), 19 Jan 2025 - 23 Jan 2025},
subtyp = {Other},
cin = {ER-C-1},
cid = {I:(DE-Juel1)ER-C-1-20170209},
pnm = {5351 - Platform for Correlative, In Situ and Operando
Characterization (POF4-535)},
pid = {G:(DE-HGF)POF4-5351},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1044270},
}