21 citations · 47 across the 8 of their papers we have counts for
8 papers
Geometric blockade in a quantum dot coupled to two-dimensional and three dimensional electron gases
K. Yamada, M. Stopa, T. Hatano +4
We fabricated a quantum dot coupled laterally to a two-dimensional electron gas and vertically to a three-dimensional electron gas in order to investigate the eigenstate dependence…
Excitonic optical spectra and energy structures in a one-dimensional Mott insulator demonstrated by applying a many-body Wannier functions method to a charge model
T. Yamaguchi, K. Iwano, T. Miyamoto +5
We have applied a many-body Wannier functions method to theoretically calculate an excitonic optical conductivity spectrum and energy structure in a one-dimensional (1D) Mott insul…
Status of the Laser Spectroscopy and Merged-beam Experiments at RICE
Y. Nakano, R Igosawa, S. Iida +9
Recently, we reported the commissioning of the new cryogenic ion storage ring RICE, which demonstrated potential capabilities for the precise studies of molecular structures and re…
A charge model as an effective model of one-dimensional Hubbard and extended Hubbard systems: its application to linear optical spectrum calculations in large systems based upon many-body Wannier functions
Shu Ohmura, Akira Takahashi, Kaoru Iwano +5
We propose an effective model called the "charge model", for the half-filled one-dimensional Hubbard and extended Hubbard models. In this model, spin-charge separation, which has b…
Photoexcitation of a polarization-inverted domain from the charge-ordered ferroelectric ground state of (TMTTF)PF
T. Yamaguchi, K. Asada, H. Yamakawa +5
We theoretically revealed that a weak photoexcitation achieves the electric polarization-inversion with approximately of all the charges, which was interpreted as a superimp…
Large entropy change derived from the orbitally assisted three-centered two-electron σ bond formation in a metallic Li0.33VS2
N. Katayama, S. Tamura, T. Yamaguchi +8
We discuss herein the emergence of a large entropy change in metallic Li0.33VS2 derived from the orbitally assisted loose σ bond formation. Comprehensive structural studies based o…
The optical conductivity for a spin-Peierls ground state of (TMTTF)PF with tetramer formation
T. Yamaguchi, K. Iwano
We theoretically investigate the optical conductivity of (TMTTF)PF in the spin-Peierls ground state within the framework of the exact diagonalization method at absolute…
Ferromagnetic Peierls insulator state in MgMnO ( = K, Rb, Cs)
T. Yamaguchi, K. Sugimoto, Y. Ohta +2
Using the density-functional-theory based electronic structure calculations, we study the electronic state of recently discovered mixed-valent manganese oxides MgMnO$_{1…