119 citations · 1.5k across the 44 of their papers we have counts for
6 papers · 1 filter
Electrical polarization of nuclear spins in a breakdown regime of quantum Hall effect
M. Kawamura, H. Takahashi, K. Sugihara +3
We have developed a method for electrical polarization of nuclear spins in quantum Hall systems. In a breakdown regime of odd-integer quantum Hall effect (QHE), excitation of elect…
Spin transport through a single self-assembled InAs quantum dot with ferromagnetic leads
K. Hamaya, S. Masubuchi, M. Kawamura +7
We have fabricated a lateral double barrier magnetic tunnel junction (MTJ) which consists of a single self-assembled InAs quantum dot (QD) with ferromagnetic Co leads. The MTJ show…
Gate-controlled nuclear magnetic resonance in an AlGaAs/GaAs quantum Hall device
S. Masubuchi, K. Hamaya, T. Machida
We study the resistively detected nuclear magnetic resonance (NMR) in an AlGaAs/GaAs quantum Hall device with a side gate. The strength of the hyperfine interaction between electro…
Knight shift detection using gate-induced decoupling of the hyperfine interaction in quantum Hall edge channels
S. Masubuchi, K. Hamaya, T. Machida
A method for the observation of the Knight shift in nanometer-scale region in semiconductors is developed using resistively detected nuclear magnetic resonance (RDNMR) technique in…
Spin-dependent edge-channel transport in a Si/SiGe quantum Hall system
K. Hamaya, S. Masubuchi, K. Hirakawa +5
We study the edge-channel transport of electrons in a high-mobility Si/SiGe two-dimensional electron system in the quantum Hall regime. By selectively populating the spin-resolved…
Magnetic anisotropy switching in (Ga,Mn)As with increasing hole concentration
K. Hamaya, T. Watanabe, T. Taniyama +3
We study a possible mechanism of the switching of the magnetic easy axis as a function of hole concentration in (Ga,Mn)As epilayers. In-plane uniaxial magnetic anisotropy along [11…