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Anomalous Hall effect at the spontaneously electron-doped polar surface of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>PdCo</mml:mi><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math> ultrathin films

T. Harada, K. Sugawara, K. Fujiwara, M. Kitamura, S. Ito, T. Nojima, K. Horiba, H. Kumigashira, T. Takahashi, T. Sato, A. Tsukazaki

2020Physical Review Research27 citationsDOIOpen Access PDF

Abstract

The authors probe a ferromagnetic state emerging on an atomic surface of a nonmagnetic layered metal PdCoO2. Measurements of PdCoO2 ultrathin films reveal that spin-polarized Pd-derived electrons are flowing at the surface under the influence of triangular lattices of magnetic Co ions.

Topics & Concepts

Condensed matter physicsFerromagnetismMaterials sciencePolarSurface (topology)Hall effectMetalElectronThin filmMagnetic fieldFerromagnetic material propertiesState (computer science)NickelCopper-based nanomaterials and applicationsMagnetic properties of thin filmsChemical and Physical Properties of Materials
Anomalous Hall effect at the spontaneously electron-doped polar surface of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>PdCo</mml:mi><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math> ultrathin films | Litcius