Anisotropic charge distribution induced by spin polarization in La0.6Sr0.4MnO3 thin films studied by X-ray magnetic linear dichroism

Goro Shibata, Kohei Yoshimatsu, Keisuke Ishigami, Takayuki Harano, Yukio Takahashi, Shoya Sakamoto, Yosuke Nonaka, Toshiharu Kadono, Mitsuho Furuse, Schuichiro Fuchino, Makoto Okano, Junichi I. Fujihira, Akira Uchida, Kazunori Watanabe, Hideyuki Fujihira, Seiichi Fujihira, Arata Tanaka, Hiroshi Kumigashira, Tsuneharu Koide, Atsushi Fujimori

Research output: Contribution to journalArticlepeer-review

Abstract

Magnetic anisotropy of epitaxially grown thin films is affected by the strain from the substrates due to a combined effect of distorted electronic structure and spin–orbit interaction (SOI). As an inverse process, one expects an anisotropy of the electronic structure induced by magnetization in the presence of SOI. We have studied the charge-density anisotropy induced by magnetization in thin films of the ferromagnetic metal La1xSrxMnO3 via X-ray magnetic linear dichroism (XMLD). XMLD measurements on thin films with various thicknesses have shown that the XMLD intensity is proportional to the square of the ferromagnetic moment. Using the XMLD sum rule and cluster-model calculation, it has been shown that more Mn 3d electrons are distributed in orbitals elongated along the direction parallel to the spin polarization than in orbitals elongated in the direction perpendicular to it. The cluster-model calculation has shown that the effect of tensile strain from the SrTiO3 substrate on the XMLD spectra is also consistent with the observed XMLD spectral line shapes.

Original languageEnglish
Article number114713
Journaljournal of the physical society of japan
Volume87
Issue number11
DOIs
Publication statusPublished - 2018
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Anisotropic charge distribution induced by spin polarization in La<sub>0.6</sub>Sr<sub>0.4</sub>MnO<sub>3</sub> thin films studied by X-ray magnetic linear dichroism'. Together they form a unique fingerprint.

Cite this