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@ARTICLE{Chandrasena:859719,
author = {Chandrasena, R. U. and Flint, C. L. and Arab, Arian and
Nemsak, Slavomir and Gehlmann, M. and Özdöl, V. B. and
Bisti, F. and Wijesekara, K. D. and Meyer-Ilse, J. and
Gullikson, E. and Arenholz, E. and Ciston, J. and Schneider,
C. M. and Strocov, V. N. and Suzuki, Y. and Gray, A. X.},
editor = {Yang, W.},
title = {{D}epth-resolved charge reconstruction at the {L}a{N}i {O}
3 / {C}a{M}n {O} 3 interface},
journal = {Physical review / B},
volume = {98},
number = {15},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2019-00556},
pages = {155103},
year = {2018},
abstract = {Rational design of low-dimensional electronic phenomena at
oxide interfaces is currently considered to be one of the
most promising schemes for realizing new energy-efficient
logic and memory devices. An atomically abrupt interface
between paramagnetic LaNiO3 and antiferromagnetic CaMnO3
exhibits interfacial ferromagnetism, which can be tuned via
a thickness-dependent metal-insulator transition in LaNiO3.
Once fully understood, such emergent functionality could
turn this archetypal Mott-interface system into a key
building block for the above-mentioned future devices. Here,
we use depth-resolved standing-wave photoemission
spectroscopy in conjunction with scanning transmission
electron microscopy and x-ray absorption spectroscopy, to
demonstrate a depth-dependent charge reconstruction at the
LaNiO3/CaMnO3 interface. Our measurements reveal an
increased concentration of Mn3+ and Ni2+ cations at the
interface, which create an electronic environment favorable
for the emergence of interfacial ferromagnetism mediated via
the Mn4+−Mn3+ ferromagnetic double exchange and
Ni2+−O−Mn4+ superexchange mechanisms. Our findings
suggest a strategy for designing functional Mott oxide
heterostructures by tuning the interfacial cation
characteristics via controlled manipulation of thickness,
strain, and ionic defect states.},
cin = {PGI-6},
ddc = {530},
cid = {I:(DE-Juel1)PGI-6-20110106},
pnm = {522 - Controlling Spin-Based Phenomena (POF3-522)},
pid = {G:(DE-HGF)POF3-522},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000446136000003},
doi = {10.1103/PhysRevB.98.155103},
url = {https://juser.fz-juelich.de/record/859719},
}