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- W2026632756 abstract "We report on magnetotransport measurements of nanoconstricted (Ga,Mn)As devices showing very large resistance changes that can be controlled by both an electric and a magnetic field. Based on the bias voltage and temperature dependent measurements down to the millikelvin range we compare the models currently used to describe transport through (Ga,Mn)As nanoconstrictions. We provide an explanation for the observed spin-valve like behavior during a magnetic field sweep by means of the magnetization configurations in the device. Furthermore, we prove that Coulomb-blockade plays a decisive role for the transport mechanism and show that modeling the constriction as a granular metal describes the temperature and bias dependence of the conductance correctly and allows to estimate the number of participating islands located in the constriction." @default.
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- W2026632756 date "2009-09-25" @default.
- W2026632756 modified "2023-09-26" @default.
- W2026632756 title "Transport through (Ga,Mn)As nanoislands: Coulomb blockade and temperature dependence of the conductance" @default.
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- W2026632756 doi "https://doi.org/10.1103/physrevb.80.125330" @default.
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