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Berlin 2018 – scientific programme

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MA: Fachverband Magnetismus

MA 47: Focus Session: Spinorbitronics – from efficient charge/spin conversion based on spin-orbit coupling to chiral magnetic skyrmions II (joint session MA/TT)

MA 47.5: Talk

Thursday, March 15, 2018, 16:30–16:45, H 1012

Large perpendicular magnetic anisotropy and Dzyaloshinskii Moriya chiral interaction at room temperature in epitaxial graphene-based structuresFernando Ajejas1, Adrian Gudin1, Ruben Guerrero1, Leticia De Melo Costa1, Jose Manuel Diez1, Pablo Olleros1, Alberto Anadon1, Maria Varela2, Manuel Valvidares3, Pierluigi Gargiani3, Jan Vogel4, Stefania Pizzini4, Julio Camarero1, Rodolfo Miranda1, and •Paolo Perna11IMDEA Nanociencia, Madrid, Spain — 2ALBA SYNCHROTRON, Barcelona, Spain — 3Universidad Complutense de Madrid, Madrid, Spain — 4CNRS Institut Néel, Grenoble, France

A major challenge for future spintronics is to develop suitable spin transport channels with superior properties as long spin lifetime and propagation length. Graphene can meet these requirements, even at room temperature. On the other side, the use of fast motion of Néel-type chiral domain walls (and magnetic skyrmions) can satisfy the demands for high-density data storage, low power consumption and high processing speed. Here, by engineering the epitaxial growth of gr/Co/Pt(111) stacks on (111)-oriented oxide crystals, we achieve an enhanced perpendicular magnetic anisotropy (PMA), with Co thickness up to 4 nm, and left-handed Néel-type chiral domain walls (DWs) stabilized by a strong effective Dzyaloshinskii Moriya interaction (DMI).

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