BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:Kayla Nguyen \, \n\n
Understanding chirality\, the intrinsic handedness of a system\, is imp ortant for future technologies using quantum magnetic materials. \; Of particular interest are magnetic skyrmions which are chiral and topologic ally protected\, meaning that their spin textures can act as barriers from deformation in crystalline grains. \; However\, most electron microsc opy studies use Lorentz TEM or holography to investigate chirality in skyr mions in nearly perfect single crystals because Fresnel effects may cause signals from grain structures to be mistaken as magnetism when the two are comparable in size. \; In this work\, we probe nanomagnetism of topol ogical magnetic textures in sputtered thin film of B20 FeGe on Si to study the relationship between magnetic and crystal chirality. \; Using 4D- STEM\, we find that the vorticity and helicity of these magnetic topologic al phases are coupled to the crystal chirality. \; Furthermore\, our w ork shows that signals from magnetism can be disentangled from crystalline effects for sub-micron grains\, enabling a new way to investigate topolog ical magnetism in the presence of small polycrystalline grains. This metho dology is important for spintronics and low-power magnetic memory technolo gies that rely on scalable techniques for large scale manufacturing of rea l devices. \;
\n DTSTART:20230210T203000Z LOCATION:Clark Hall\, Room 108 SUMMARY:Uncovering Chirality of Skyrmions in Polycrystalline B20 FeGe on Si END:VEVENT END:VCALENDAR