Role of doped Ru in coercivity-enhanced La_{0.6}Sr_{0.4}MnO₃ thin film studied by x-ray magnetic circular dichroism

T. Harano , G. Shibata , K. Ishigami , Y. Takashashi , V. K. Verma , V. R. Singh , T. Kadono , A. Fujimori

show 10 more authors

Y. Takeda T. Okane Y. Saitoh H. Yamagami T. Koide H. Yamada A. Sawa M. Kawasaki Y. Tokura A. Tanaka

Authors on Pith no claims yet

classification ❄️ cond-mat.mtrl-sci cond-mat.str-el

keywords magneticmomentcirculardichroismfiniteorbitalspinthin

0 comments

read the original abstract

The coercivity of La$_{1-x}$Sr$_x$MnO$_3$ thin films can be enhanced by Ru substitution for Mn. In order to elucidate its mechanism, we performed soft x-ray absorption and magnetic circular dichroism measurements at the Ru M$_{2,3}$ and Mn L$_{2,3}$ edges. We found that the spin direction of Ru and Mn are opposite and that Ru has a finite orbital magnetic moment. Cluster-model analysis indicated that the finite orbital magnetic moment as well as the reduced spin moment of Ru result from local lattice distortion caused by epitaxial strain from the SrTiO$_3$ substrate in the presence of spin-orbit interaction.

This paper has not been read by Pith yet.

Role of doped Ru in coercivity-enhanced La_{0.6}Sr_{0.4}MnO₃ thin film studied by x-ray magnetic circular dichroism

discussion (0)