84 citations · 300 across the 5 of their papers we have counts for
5 papers
Enhancement of the superconducting critical temperature in BiSrCaCuO by controlling disorder outside CuO planes
H. Hobou, S. Ishida, K. Fujita +4
We investigate the effect of disorder at various lattice sites outside the CuO plane on the superconducting critical temperature of the cuprate superconductor BiSr$_2…
Kondo effect in a semiconductor quantum dot coupled to ferromagnetic electrodes
K. Hamaya, M. Kitabatake, K. Shibata +7
Using a laterally-fabricated quantum-dot (QD) spin-valve device, we experimentally study the Kondo effect in the electron transport through a semiconductor QD with an odd number of…
Electric-field control of tunneling magnetoresistance effect in a Ni/InAs/Ni quantum-dot spin valve
K. Hamaya, M. Kitabatake, K. Shibata +6
We demonstrate an electric-field control of tunneling magnetoresistance (TMR) effect in a semiconductor quantum-dot (QD) spin-valve device. By using ferromagnetic Ni nano-gap 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…
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…