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Transport through (Ga,Mn)As nanoconstrictions

Schlapps, Markus ; Döppe, Matthias ; Wagner, Konrad ; Reinwald, M. ; Wegscheider, Werner ; Weiss, Dieter


We investigate magnetoresistance effects for transport across (Ga,Mn)As nanoislands, detached by nanoconstrictions from wider (Ga,Mn)As input leads. As in previous studies a huge magnetoresistance was found for nanoconstrictions in the tunnelling regime. For slightly wider junctions an enhanced anisotropic magnetoresistance effect was observed.

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