3 papers
cond-mat.mtrl-sci2020
Negative-charge-storing mechanism of potassium-ion electrets used for vibration-powered generators: Microscopic study of a-SiO2 with and without potassium atoms
Toru Nakanishi, Takeshi Miyajima, Kenta Chokawa +5
A potassium-ion electret, which is a key element of vibration-powered microelectromechanical generators, can store negative charge almost permanently. However, the mechanism by whi…
cond-mat.mes-hall2018
Influence of edge magnetization and electric fields on zigzag silicene, germanene and stanene nanoribbons
Ayami Hattori, Keiji Yada, Masaaki Araidai +3
Using a multi-orbital tight-binding model, we have studied the edge states of zigzag silicene, germanene, and stanene nanoribbons (ZSiNRs, ZGeNRs and ZSnNRs, respectively) in the p…
cond-mat.mtrl-sci2004
Field emission mechanisms of graphitic nanostructures
Masaaki Araidai, Yasuhiro Nakamura, Kazuyuki Watanabe
Field emission (FE) and the electronic-states origin of graphitic nanostructures were investigated by first-principles calculations based on time-dependent density-functional theor…