Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session E22: Chiral Magnetism in Thin Films
8:00 AM–11:00 AM,
Tuesday, March 6, 2018
LACC Room: 402A
Sponsoring Units: GMAG DMP
Chair: Adam Ahmed, Ohio State Univ - Columbus
Abstract: E22.00010 : Engineering the Dzyaloshinskii-Moriya interaction in MnxFe1-xGe thin films*
9:48 AM–10:00 AM
Controlling chiral interactions in B20-hellimagnet systems is an exciting route to tailoring topological spin textures, e.g. Bloch skyrmions, in these systems. Forming MnxFe1-xGe alloys enable this control by varying x, which was previously studied using Lorentz transmission electron microscopy and neutron scattering studies on bulk MnxFe1-xGe crystals [1,2]. Thin film versions of this material enable spintronic devices that take advantage of non-collinear spin textures, however, the growth of MnxFe1-xGe compounds has been an outstanding challenge. Here we report the successful MBE growth and comprehensive characterization of epitaxial MnxFe1-xGe films. In addition, in concert with micromagnetic simulations, we use microwave absorption spectroscopy to quantify the Dzyaloshinskii-Moriya interaction. Our approach also tests the limits of micromagnetic computational treatment of a helimagnets in which the helical pitch is comparable to a lattice constant.
 K. Shibata et al., Nat. Nanotechnol. 8, 723 (2013).
 S. V. Grigoriev et al., Phys. Rev. Lett. 110, 207201 (2013).
*DOE Office of Science (Grant # DE-SC0012245)
Materials for Innovation Platform Program NSF (Grant DMR-1539918)
NSF MRSEC (Grant # DMR-1120296)
NSF (Grant # ECCS-1542081)
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