73 citations · 485 across the 27 of their papers we have counts for
6 papers · 1 filter
Suppression of rectification at metal-Mott-insulator interfaces
Kenji Yonemitsu, Nobuya Maeshima, Tatsuo Hasegawa
Charge transport through metal-Mott-insulator interfaces is studied and compared with that through metal-band-insulator interfaces. For band insulators, rectification has been know…
Mechanism of Ambipolar Field-Effect Transistors on One-Dimensional Organic Mott Insulators
Kenji Yonemitsu
The experimentally observed, ambipolar field-effect characteristics of Mott insulators are reproduced in the one-dimensional Hubbard model attached to a tight-binding model for sou…
Photoinduced melting of charge order in a quarter-filled electron system coupled with different types of phonons
Kenji Yonemitsu, Nobuya Maeshima
Photoinduced melting of charge order is calculated by using the exact many-electron wave function coupled with classically treated phonons in the one-dimensional quarter-filled Hub…
Effects of Electron-Lattice Coupling on Charge Order in θ-(ET)2X
Yasuhiro Tanaka, Kenji Yonemitsu
Charge ordering accompanied by lattice distortion in quasi-two dimensional organic conductors θ-(ET)2X (ET=BEDT-TTF) is studied by using an extended Hubbard model with Peierls-type…
Charge-Transfer Excitations in One-Dimensional Dimerized Mott Insulators
Nobuya Maeshima, Kenji Yonemitsu
We investigate the optical properties of one-dimensional (1D) dimerized Mott insulators using the 1D dimerized extended Hubbard model. Numerical calculations and a perturbative ana…
Charge ordering in θ-(BEDT-TTF)2RbZn(SCN)4: Cooperative effects of electron correlations and lattice distortions
Satoshi Miyashita, Kenji Yonemitsu
Combined effects of electron correlations and lattice distortions are investigated on the charge ordering in θ-(BEDT-TTF)2RbZn(SCN)4 theoretically in a two-dimensional 3/4-filled e…