Regensburg 2019 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 15: Magnetism Poster A

MA 15.36: Poster

Dienstag, 2. April 2019, 10:00–13:00, Poster E

Electronic and magnetic structure of ultrathin SrRuO3 film grown on SrTiO3 (001) substrate — •Kartik Samanta, Marjana Ležaić, Yuriy Mokrousov, and Stefan Blügel — Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany

Oxides interfaces offer a new perspective to stabilize the skyrmion due to their response to electric fields, low Ohmic losses, variety of interface symmetry as well as the prospective anisotropic Dzyaloshinskii-Moriya interaction (DMI). We investigate by virtue of spin density functional theory (DFT) as realized in the FLEUR code [1], magnetic structure of the ultrathin film of SrRuO3 grown on the SrTiO3 (001) substrate in c(2 x 2) unit cell to search the interface stabilized skyrmion in oxide structure. At the ultrathin limit of three monolayers the SrRuO3, the film is found to show a metal to insulating (MIT) ground state with antiferromagnetic magnetic order. The t2g level difference, lattice distortion, as well as the layer thickness, play together a crucial role in determining this magnetic ground state. At the ultrathin limit of three monolayers of the SrRuO3 film, a reasonable amount of orbital magnetic moment is found at the Ru sites compared the bulk SrRuO3. We have also calculated the anomalous Hall conductivity for bulk as well as the thin film. We hope that strong spin-orbit coupling ant Ru site together with broken inversion symmetry in the ultrathin film will give rise DMI which can stabilize the Skyrmion in this system.

[1] www.flapw.de