Magnetic anisotropy driven by ligand in 4<i>d</i> transition-metal oxide SrRuO3-Reference-Cited by-同舟云学术

Magnetic anisotropy driven by ligand in 4d transition-metal oxide SrRuO3

Published:2024-04-01 Issue:4 Volume:12 Page:
ISSN:2166-532X
Container-title:APL Materials
language:en
Short-container-title:

Author:

Wakabayashi Yuki K.¹^ORCID,Kobayashi Masaki²³^ORCID,Seki Yuichi³,Kotani Yoshinori⁴^ORCID,Ohkochi Takuo⁴⁵^ORCID,Yamagami Kohei⁴,Kitamura Miho⁶,Taniyasu Yoshitaka¹,Krockenberger Yoshiharu¹^ORCID,Yamamoto Hideki¹^ORCID

Affiliation:

1. NTT Basic Research Laboratories, NTT Corporation 1 , Atsugi, Kanagawa 243-0198, Japan

2. Center for Spintronics Research Network, The University of Tokyo 2 , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

3. Department of Electrical Engineering and Information Systems, The University of Tokyo 3 , Bunkyo, Tokyo 113-8656, Japan

4. Japan Synchrotron Radiation Research Institute (JASRI) 4 , 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan

5. Laboratory of Advanced Science and Technology for Industry, University of Hyogo 5 , Kamigori, Hyogo 678-1205, Japan

6. NanoTerasu Center, National Institutes for Quantum Science and Technology (QST) 6 , Sendai 980-8579, Japan

Abstract

The origin of magnetic anisotropy in magnetic compounds is a longstanding issue in materials science, and nonmagnetic ligand ions are considered to contribute little to magnetic anisotropy. Here, we introduce the concept of ligand-driven magnetic anisotropy in a complex transition-metal oxide. We conducted x-ray magnetic circular dichroism spectroscopies at the Ru and O edges in the 4d ferromagnetic metal SrRuO3. Systematic variation of the sample thickness in the range of ≤10 nm allowed us to control the localization of Ru 4d t2g states, which affects the magnetic coupling between the Ru and O ions. We observe that the orbital magnetic moment of the ligand O 2p orbitals induced through the charge transfer to the Ru 4d t2g states becomes anisotropic first, and the anisotropic magnetic moment of Ru and, therefore, the entire system is induced via magnetic coupling between Ru 4d and O 2p orbitals.

Funder

Japan Science and Technology Agency

Publisher

AIP Publishing

Link

https://pubs.aip.org/aip/apm/article-pdf/doi/10.1063/5.0203492/19881591/041119_1_5.0203492.pdf

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