Muraguchi, Masakazu, Takada, Yukihiro, Nomura, Shintaro, Endoh, Testuo, Shiraishi, Kenji
We have theoretically investigated the time-evolution of electron transport from a two-dimensional electron system (2DES) to a quantum dot (QD). We clearly showed that the coherent electron transport...
Electronic structure study of local dielectric properties of lanthanoid oxide clusters (2008)
Doi, Kentaro, Mikazuki, Yutaka, Sugino, Shinya, Doi, Tatsuki, Szarek, Pawel, Senami, Masato, ...
Single-electron and quantum SOI devices www.elsevier.com/locate/mee (2007)
Yukinori Ono, Kenji Yamazaki, Masao Nagase, Seiji Horiguchi, Kenji Shiraishi, Yasuo Takahashi
This paper describes, from the viewpoint of device fabrication, single-electron and quantum devices using silicon-oninsulators (SOIs). We point out that control of the oxidation of Si is quite...
Physical Origin of Stress-Induced Leakage Currents in Ultra-Thin Silicon Dioxide Films (2007)
ENDOH, Tetsuo, HIROSE, Kazuyuki, SHIRAISHI, Kenji
The physical origin of stress-induced leakage currents (SILC) in ultra-thin SiO2 films is described. Assuming a two-step trap-assisted tunneling process accompanied with an energy relaxation process...
Isotopic labeling study of the oxygen diffusion in HfO2/SiO2/Si (2007)
Zhao, Ming, Nakajima, Kaoru, Suzuki, Motofumi, Kimura, Kenji, Uematsu, Masashi, Torii, Kazuyoshi, ...
Superconductivity in quantum-dot superlattices composed of quantum wire networks (2002)
Kimura, Takashi, Tamura, Hiroyuki, Kuroki, Kazuhiko, Shiraishi, Kenji, Takayanagi, Hideaki, Arita, Ryotaro
Based on calculations using the local density approximation, we propose quantum wire networks with square and plaquette type lattice structures that form quantum dot superlattices. These artificial...
Flat-band ferromagnetism in quantum dot superlattices (2001)
Tamura, Hiroyuki, Shiraishi, Kenji, Kimura, Takashi, Takayanagi, Hideaki
Possibility of flat-band ferromagnetism in quantum dot arrays is theoretically discussed. By using a quantum dot as a building block, quantum dot superlattices are possible. We consider dot arrays on...
Magnetic field effects on two-dimensional Kagome lattices (2001)
Kimura, Takashi, Tamura, Hiroyuki, Shiraishi, Kenji, Takayanagi, Hideaki
Magnetic field effects on single-particle energy bands (Hofstadter butterfly), Hall conductance, flat-band ferromagnetism, and magnetoresistance of two-dimensional Kagome lattices are studied. The...
Design of a semiconductor ferromagnet in a quantum dot artificial crystal (2001)
Shiraishi, Kenji, Tamura, Hiroyuki, Takayanagi, Hideaki
We present the theoretical design of quantum dot (QD) artificial ferromagnetic crystals. The electronic structure calculations based on local spin density approximation (LSDA) show that our designed...