Very large magnetoresistance in lateral ferromagnetic (Ga,Mn)As wires with nanoconstrictions

C. Ruester, T. Borzenko, C. Gould +7

We have fabricated (Ga,Mn)As nanostructures in which domain walls can be pinned by sub-10 nm constrictions. Controlled by shape anisotropy, we can switch the regions on either side…