Magnetic Anisotropy and Spin Textures in Ferromagnetic EuO1-x and Helical Eu Metal – via Transport Measurements

Jinke Tang, University of Wyoming

October 15, 2021

I will talk about what we have learned about a unique material - magnetic semiconductor EuO.  I will focus on the magnetic phase diagram and possible spin textures in this materials.  While definitive spin resolved imaging of such spin texture is still pending, we have observed magnetic anisotropies in the electronic transport that can only be explained by the presence of spin textures suck as Skyrmions.  I will also discuss the spin-dependent transport in helical antiferromagnetic Eu metal.  Hysteretic oscillations observed in the magnetoresistance is associated with the change in the antiferromagnetic domain distribution in europium.