KIT | KIT-Bibliothek | Impressum | Datenschutz

Direct Observation of Strong Anomalous Hall Effect and Proximity-induced Ferromagnetic State in SrIrO₃

Jaiswal, Arun Kumar ORCID iD icon 1; Wang, Di ORCID iD icon 2; Wollersen, Vanessa 2; Schneider, Rudolf 1; Le Tacon, Matthieu ORCID iD icon 1; Fuchs, Dirk 1
1 Institut für QuantenMaterialien und Technologien (IQMT), Karlsruher Institut für Technologie (KIT)
2 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

The 5d iridium-based transition metal oxides have gained broad interest because of their strong spin-orbit coupling which favors new or exotic quantum electronic states. On the other hand, they rarely exhibit more mainstream orders like ferromagnetism due to generally weak electron-electron correlation strength. Here, we show a proximity-induced ferromagnetic (FM) state with TC ≈ 100 K and strong magnetocrystalline anisotropy in a SrIrO3 (SIO) heterostructure via interfacial charge transfer by using a ferromagnetic insulator in contact with SIO. Electrical transport allows to selectively probe the FM state of the SIO layer and the direct observation of a strong, intrinsic and positive anomalous Hall effect (AHE). For T ≤ 20 K, the AHE displays unusually large coercive and saturation field, a fingerprint of a strong pseudospin-lattice coupling. A Hall angle, σxyAHE/σxx, larger by an order of magnitude than in typical 3d metals and a FM net moment of about 0.1 μB/Ir, is reported. This emphasizes how efficiently the nontrivial topological band properties of SIO can be manipulated by structural modifications and the exchange interaction with 3d TMOs.

Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Institut für QuantenMaterialien und Technologien (IQMT)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 07.04.2022
Sprache Englisch
Identifikator ISSN: 0935-9648, 1521-4095
KITopen-ID: 1000142494
HGF-Programm 47.11.02 (POF IV, LK 01) Emergent Quantum Phenomena
Weitere HGF-Programme 43.35.03 (POF IV, LK 01) Structural and Functional Behavior of Solid State Systems
Erschienen in Advanced materials
Verlag John Wiley and Sons
Band 34
Heft 14
Seiten Article no: 2109163
Vorab online veröffentlicht am 26.01.2022
Nachgewiesen in Dimensions
Web of Science
Scopus

Verlagsausgabe §
DOI: 10.5445/IR/1000142494
Veröffentlicht am 24.06.2022
Originalveröffentlichung
DOI: 10.1002/adma.202109163
Scopus
Zitationen: 38
Web of Science
Zitationen: 36
Dimensions
Zitationen: 39
Seitenaufrufe: 134
seit 28.01.2022
Downloads: 181
seit 24.06.2022
Cover der Publikation
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page