TY  - JOUR
AU  - Asmara, Teguh Citra
AU  - Green, Robert J.
AU  - Suter, Andreas
AU  - Wei, Yuan
AU  - Zhang, Wenliang
AU  - Knez, Daniel
AU  - Harris, Grant
AU  - Tseng, Yi
AU  - Yu, Tianlun
AU  - Betto, Davide
AU  - Garcia-Fernandez, Mirian
AU  - Agrestini, Stefano
AU  - Klein, Yannick Maximilian
AU  - Kumar, Neeraj
AU  - Galdino, Carlos William
AU  - Salman, Zaher
AU  - Prokscha, Thomas
AU  - Medarde, Marisa
AU  - Müller, Elisabeth
AU  - Soh, Yona
AU  - Brookes, Nicholas B.
AU  - Zhou, Ke-Jin
AU  - Radovic, Milan
AU  - Schmitt, Thorsten
TI  - Emergence of Interfacial Magnetism in Strongly‐Correlated Nickelate‐Titanate Superlattices
JO  - Advanced materials
VL  - 36
IS  - 38
SN  - 0935-9648
CY  - Weinheim
PB  - Wiley-VCH
M1  - PUBDB-2024-05947
SP  - 10668
PY  - 2024
AB  - Strongly-correlated transition-metal oxides are widely known for their variousexotic phenomena. This is exemplified by rare-earth nickelates such asLaNiO3 , which possess intimate interconnections between their electronic,spin, and lattice degrees of freedom. Their properties can be further enhancedby pairing them in hybrid heterostructures, which can lead to hidden phasesand emergent phenomena. An important example is the LaNiO<sub>3</sub> /LaTiO<sub>3</sub> superlattice, where an interlayer electron transfer has been observed fromLaTiO<sub>3</sub> into LaNiO<sub>3</sub> leading to a high-spin state. However, macroscopicemergence of magnetic order associated with this high-spin state has so farnot been observed. Here, by using muon spin rotation, x-ray absorption, andresonant inelastic x-ray scattering, direct evidence of an emergentantiferromagnetic order with high magnon energy and exchange interactionsat the LaNiO3 /LaTiO<sub>3</sub> interface is presented. As the magnetism is purelyinterfacial, a single LaNiO<sub>3</sub>/LaTiO<sub>3</sub> interface can essentially behave as anatomically thin strongly-correlated quasi-2D antiferromagnet, potentiallyallowing its technological utilization in advanced spintronic devices.Furthermore, its strong quasi-2D magnetic correlations, orbitally-polarizedplanar ligand holes, and layered superlattice design make its electronic,magnetic, and lattice configurations resemble the precursor states ofsuperconducting cuprates and nickelates, but with an S→1 spin state instead.
LB  - PUB:(DE-HGF)16
C6  - pmid:39101291
UR  - <Go to ISI:>//WOS:001283369300001
DO  - DOI:10.1002/adma.202310668
UR  - https://bib-pubdb1.desy.de/record/614727
ER  -