Large anomalous Hall, Nernst effect and topological phases in the 3d-4d/5d-based oxide double perovskites

Abstract Magnetism and spin-orbit coupling are two fundamental and interconnected properties of oxide materials, that can give rise to various topological transport phenomena, including anomalous Hall and anomalous Nernst effects. These transport responses can be significantly enhanced by designing...

Full description

Saved in:
Bibliographic Details
Published innpj computational materials Vol. 9; no. 1; pp. 167 - 10
Main Authors Samanta, Kartik, Noky, Jonathan, Robredo, Iñigo, Kuebler, Juergen, Vergniory, Maia G., Felser, Claudia
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group 11.09.2023
Nature Portfolio
Subjects
Electromagnetism
Electronic structure
Electrons
Energy
Hall effect
Magnetic properties
Magnetism
Nernst-Ettingshausen effect
Perovskites
Physics
Spin-orbit interactions
Topology
Transition metals
Transport phenomena
Online AccessGet full text

Cover

More Information
Summary:Abstract Magnetism and spin-orbit coupling are two fundamental and interconnected properties of oxide materials, that can give rise to various topological transport phenomena, including anomalous Hall and anomalous Nernst effects. These transport responses can be significantly enhanced by designing an electronic structure with a large Berry curvature. In this context, rocksalt-ordered double perovskites (DP), denoted as A 2 BB’O 6 , with two distinct transition metal sites are very powerful platforms for exploration and research. In this work, we present a comprehensive study based on the intrinsic anomalous transport in cubic and tetragonal stable DP compounds with 3d-4d/5d elements. Our findings reveal that certain DP compounds show a large anomalous Hall effect, displaying topological band crossings in the proximity of the Fermi energy.
ISSN:2057-3960
2057-3960
DOI:10.1038/s41524-023-01106-4