30 citations · 75 across the 7 of their papers we have counts for
7 papers
Double island Coulomb blockade in (Ga,Mn)As-nanoconstrictions
S. Geißler, S. Pfaller, M. Utz +4
We report on a systematic study of the Coulomb blockade effects in nanofabricated narrow constrictions in thin (Ga,Mn)As films. Different low-temperature transport regimes have bee…
Shot Noise Induced by Nonequilibrium Spin Accumulation
Tomonori Arakawa, Junichi Shiogai, Mariusz Ciorga +8
When an electric current passes across a potential barrier, the partition process of electrons at the barrier gives rise to the shot noise, reflecting the discrete nature of the el…
Giant enhancement of spin detection sensitivity in (Ga,Mn)As/GaAs Esaki diodes
Junichi Shiogai, Mariusz Ciorga, Martin Utz +6
We investigate the correlation between spin signals measured in three-terminal (3T) geometry by the Hanle effect and the spin accumulation generated in a semiconductor channel in a…
All-electrical measurements of direct spin Hall effect in GaAs with Esaki diode electrodes
Markus Ehlert, Cheng Song, Mariusz Ciorga +4
We report on measurements of direct spin Hall effect in a lightly n-doped GaAs channel. As spin detecting contacts we employed highly efficient ferromagnetic Fe/(Ga,Mn)As/GaAs Esak…
Nonuniform current density and spin accumulation in a 1 μm thick n-GaAs channel
Bernhard Endres, Mariusz Ciorga, Robert Wagner +6
The spin accumulation in an n-GaAs channel produced by spin extraction into a (Ga,Mn)As contact is measured by cross-sectional imaging of the spin polarization in GaAs. The spin po…
Local spin valve effect in lateral (Ga,Mn)As/GaAs spin Esaki diode devices
Mariusz Ciorga, Christian Wolf, Andreas Einwanger +3
We report on a local spin valve effect observed unambiguously in lateral all-semiconductor all-electrical spin injection devices, employing p+-(Ga,Mn)As/n+-GaAs Esaki diode structu…