Magnetotransport and Domain Wall in Nanoconstriction of Ferromagnetic Semiconductor (Ga,Mn)As

T. Figielski, T. Wosinski, O. Pelya +6

We studied magnetoresistance (MR) of nanoconstrictions created in (Ga,Mn)As epilayers by O+ ion implantation. Original layers exhibit a negative MR that is plausibly caused by weak…