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Title: Electric field tuning of the anomalous Hall effect at oxide interfaces

Abstract

Anomalous Hall effect is the phenomenon where the transport properties of the spin-polarized electrons are governed by the spinorbit coupling that couples the orbital and spin degrees of freedom of the electron. Here we show that the anomalous Hall effect at a magnetic interface with strong spin-orbit coupling can be tuned with an external electric field. By altering the strength of the inversion symmetry breaking, the electric field changes the Rashba interaction, which in turn modifies the magnitude of the Berry curvature, the central quantity in determining the anomalous Hall conductivity. The effect is illustrated with a square lattice model, which yields a quadratic dependence of the anomalous Hall conductivity for small electric fields. Explicit density-functional calculations were performed for the recently grown iridate interface, viz., the (SrIrO3)1/(SrMnO3)1 (001) structure, both with and without an electric field, which show a strong electric field dependence. The effect may be potentially useful in spintronics applications.

Authors:
ORCiD logo [1];  [1]
  1. Univ. of Missouri, Columbia, MO (United States)
Publication Date:
Research Org.:
Univ. of Missouri, Columbia, MO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1603355
Grant/Contract Number:  
FG02-00ER45818
Resource Type:
Accepted Manuscript
Journal Name:
npj Computational Materials
Additional Journal Information:
Journal Volume: 5; Journal Issue: 1; Journal ID: ISSN 2057-3960
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Satpathy, Sashi, and bhowal, sayantika. Electric field tuning of the anomalous Hall effect at oxide interfaces. United States: N. p., 2019. Web. doi:10.1038/s41524-019-0198-8.
Satpathy, Sashi, & bhowal, sayantika. Electric field tuning of the anomalous Hall effect at oxide interfaces. United States. https://doi.org/10.1038/s41524-019-0198-8
Satpathy, Sashi, and bhowal, sayantika. Tue . "Electric field tuning of the anomalous Hall effect at oxide interfaces". United States. https://doi.org/10.1038/s41524-019-0198-8. https://www.osti.gov/servlets/purl/1603355.
@article{osti_1603355,
title = {Electric field tuning of the anomalous Hall effect at oxide interfaces},
author = {Satpathy, Sashi and bhowal, sayantika},
abstractNote = {Anomalous Hall effect is the phenomenon where the transport properties of the spin-polarized electrons are governed by the spinorbit coupling that couples the orbital and spin degrees of freedom of the electron. Here we show that the anomalous Hall effect at a magnetic interface with strong spin-orbit coupling can be tuned with an external electric field. By altering the strength of the inversion symmetry breaking, the electric field changes the Rashba interaction, which in turn modifies the magnitude of the Berry curvature, the central quantity in determining the anomalous Hall conductivity. The effect is illustrated with a square lattice model, which yields a quadratic dependence of the anomalous Hall conductivity for small electric fields. Explicit density-functional calculations were performed for the recently grown iridate interface, viz., the (SrIrO3)1/(SrMnO3)1 (001) structure, both with and without an electric field, which show a strong electric field dependence. The effect may be potentially useful in spintronics applications.},
doi = {10.1038/s41524-019-0198-8},
journal = {npj Computational Materials},
number = 1,
volume = 5,
place = {United States},
year = {Tue May 21 00:00:00 EDT 2019},
month = {Tue May 21 00:00:00 EDT 2019}
}

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Cited by: 15 works
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Works referencing / citing this record:

Study of nontrivial magnetism in 3 d 5 d transition metal based double perovskites
journal, February 2020


Electronic structure and anomalous Hall effect in the ferromagnetic 3 d 5 d superlattice SrMnO 3 / SrIrO 3
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