Back to Search Start Over

Perpendicular orbital and quadrupole anisotropies at Fe/MgO interfaces detected by x-ray magnetic circular and linear dichroisms

Authors :
Yuki Iida
Seiji Mitani
Hiroaki Sukegawa
Jun Okabayashi
Qingyi Xiang
Source :
Applied Physics Letters. 115:252402
Publication Year :
2019
Publisher :
AIP Publishing, 2019.

Abstract

We investigated interfacial perpendicular magnetic anisotropy (PMA) in ultrathin Fe/MgO(001) using both x-ray magnetic circular dichroism and magnetic linear dichroism (XMLD). We developed the XMLD technique for detecting the signals from the PMA samples. The PMA energy and quadrupole moments at an Fe/MgO interface were deduced from the XMLD sum rules, whose values explain the microscopic origin of PMA. We found that orbital moment anisotropy is dominant at the Fe/MgO interfacial PMA and the contribution of quadrupole moments is small but finite at the lattice distorted interfaces.

Details

ISSN :
10773118 and 00036951
Volume :
115
Database :
OpenAIRE
Journal :
Applied Physics Letters
Accession number :
edsair.doi...........b4cd54ab8f295e471263ac22cc278d31
Full Text :
https://doi.org/10.1063/1.5127665