T. Yamaguchi

activity

20182020

most citedPhotoexcitation of a polarization-inverted domain from the charge-ordered ferroelectric ground state of (TMTTF)

_{2}

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4 citations · 4 across the 1 of their papers we have counts for

collaborators

6 papers

cond-mat.str-el2020

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…

cond-mat.str-el2019

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…

cond-mat.str-el2019★ 4 cited

Photoexcitation of a polarization-inverted domain from the charge-ordered ferroelectric ground state of (TMTTF) $_{2}$ PF $_{6}$

T. Yamaguchi, K. Asada, H. Yamakawa +5

We theoretically revealed that a weak photoexcitation achieves the electric polarization-inversion with approximately $18%$ of all the charges, which was interpreted as a superimp…

cond-mat.str-el2018

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…

cond-mat.str-el2018

The optical conductivity for a spin-Peierls ground state of (TMTTF) $_{2}$ PF $_{6}$ with tetramer formation

T. Yamaguchi, K. Iwano

We theoretically investigate the optical conductivity of (TMTTF) $_{2}$ PF $_{6}$ in the spin-Peierls ground state within the framework of the exact diagonalization method at absolute…

cond-mat.str-el2018

Ferromagnetic Peierls insulator state in $A$ Mg $_{4}$ Mn $_{6}$ O $_{15}$ ( $A$ = 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 $A$ Mg $_{4}$ Mn $_{6}$ O$_{1…

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

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

Photoexcitation of a polarization-inverted domain from the charge-ordered ferroelectric ground state of (TMTTF)2​PF6​

Large entropy change derived from the orbitally assisted three-centered two-electron σ bond formation in a metallic Li0.33VS2

The optical conductivity for a spin-Peierls ground state of (TMTTF)2​PF6​ with tetramer formation

Ferromagnetic Peierls insulator state in AMg4​Mn6​O15​ (A = K, Rb, Cs)

Photoexcitation of a polarization-inverted domain from the charge-ordered ferroelectric ground state of (TMTTF) $_{2}$ PF $_{6}$

The optical conductivity for a spin-Peierls ground state of (TMTTF) $_{2}$ PF $_{6}$ with tetramer formation

Ferromagnetic Peierls insulator state in $A$ Mg $_{4}$ Mn $_{6}$ O $_{15}$ ( $A$ = K, Rb, Cs)