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Publications (58)

cond-mat.supr-con2025

Phase-modulated superconductivity via altermagnetism

Shuntaro Sumita, Makoto Naka, Hitoshi Seo

Stimulated by recent interest in altermagnets, a novel class of antiferromagnets with macroscopic time-reversal symmetry breaking, we investigate the coexistence of altermagnetism…

cond-mat.str-el2003

Coexistence of Charge Order and Spin-Peierls Lattice Distortion in One-Dimensional Organic Conductors

Makoto Kuwabara, Hitoshi Seo, Masao Ogata

The electronic properties of quarter-filled organic materials showing spin-Peierls transition are investigated theoretically. By studying the one-dimensional extended Peierls-Hubba…

cond-mat.str-el2024

Stability of correlated insulating states in molecular conductors from first-principles calculation

Takao Tsumuraya, Tsuyoshi Miyazaki, Hitoshi Seo

Electronic properties of molecular conductors exhibiting antiferromagnetic (AFM) spin order and charge order (CO) owing to electron correlation are studied using first-principles d…

cond-mat.str-el2021

Antiferromagnetic State in $I^º$ -type Molecular Conductors: Spin Splitting and Mott Gap

Hitoshi Seo, Makoto Naka

We numerically investigate the dynamical properties of $I^º$ -type molecular conductors in their antiferromagnetic Mott insulating state. By treating the extended Hubbard model on th…

cond-mat.str-el2009

Phase competitions and coexistences in quasi-one-dimensional molecular conductors: exact diagonalization study

Yuichi Otsuka, Hitoshi Seo, Yukitoshi Motome +1

We investigate ground state properties of a quasi-one-dimensional electron-lattice coupled model for quarter-filled molecular conductors. The effective one-dimensional extended Hub…

cond-mat.str-el2006

Finite-temperature phase transitions in quasi-one-dimensional molecular conductors

Hitoshi Seo, Yukitoshi Motome, Takeo Kato

Phase transitions in 1/4-filled quasi-one-dimensional molecular conductors are studied theoretically on the basis of extended Hubbard chains including electron-lattice interactions…

cond-mat.supr-con2023

Fulde-Ferrell-Larkin-Ovchinnikov state induced by antiferromagnetic order in $I^º$ -type organic conductors

Shuntaro Sumita, Makoto Naka, Hitoshi Seo

We theoretically investigate superconductivity under a spin-split band structure owing to a collinear-type antiferromagnetic order in quasi-two-dimensional organic compounds $I^º$ -(…

cond-mat.str-el2015

Photo-Induced Phase Transition in Charge Order Systems --Charge Frustration and Interplay with Lattice--

Hiroshi Hashimoto, Hiroaki Matsueda, Hitoshi Seo +1

Lattice effects on photo-excited states in interacting charge frustrated system are examined. Real time dynamics in the interacting spinless fermion model on a triangular lattice c…

cond-mat.str-el2024

Quasi-one-dimensional Spin Dynamics in a Molecular Spin Liquid System

Yugo Oshima, Yasuyuki Ishii, Francis L. Pratt +5

The molecular triangular lattice system, beta'-EtMe3Sb[Pd(dmit)2]2, is considered as a candidate material for the quantum spin liquid (QSL) state, although ongoing debates arise fr…

cond-mat.str-el2009

Spiral charge frustration in molecular conductor (DI-DCNQI)2Ag

Hitoshi Seo, Yukitoshi Motome

We theoretically study the effect of spiral-type charge frustration in a quasi-one-dimensional molecular conductor (DI-DCNQI)2Ag. We clarify how the spiral frustration in the inter…

cond-mat.str-el2004

Re-entrant Behavior and Gigantic Response in Disordered Spin-Peierls System

Hitoshi Seo, Yukitoshi Motome, Naoto Nagaosa

Effects of disorder and external field on the competing spin-Peierls and antiferromagnetic states are studied theoretically in terms of the numerical transfer matrix method applied…

cond-mat.str-el2013

Cation Dependence of the Electronic States in Molecular Triangular Lattice System Î²'-X[Pd(dmit)_2]_2: A First-principles study

Takao Tsumuraya, Hitoshi Seo, Masahisa Tsuchiizu +2

The electronic structure of an isostructural series of molecular conductors, Î²'-X[Pd(dmit)_2]_2 is systematically studied by a first-principles method based on the density-functio…

cond-mat.str-el2023

Photoinduced inhomogeneous melting of charge order by ultrashort pulsed light excitation

Hitoshi Seo, Yasuhiro Tanaka

We numerically investigate photo-responses of the charge ordered state upon stimuli of pulsed laser light, especially paying attention to the differences in the pulse width, whose…

cond-mat.str-el2010

Finite-Temperature Properties across the Charge Ordering Transition -- Combined Bosonization, Renormalization Group, and Numerical Methods

Hideo Yoshioka, Masahisa Tsuchiizu, Yuichi Otsuka +1

We theoretically describe the charge ordering (CO) metal-insulator transition based on a quasi-one-dimensional extended Hubbard model, and investigate the finite temperature ( $T$ )…

cond-mat.str-el1998

Frustrated Spin System in theta-(BEDT-TTF)_2RbZn(SCN)_4

Hitoshi Seo, Hidetoshi Fukuyama

The origin of the spin gap behavior in the low-temperature dimerized phase of theta-(BEDT-TTF)_2RbZn(SCN)_4 has been theoretically studied based on the Hartree-Fock approximation f…

cond-mat.str-el2015

Fragment Model Study of Molecular Multi-Orbital System $X$ [Pd(dmit) $_{2}$ ] $_{2}$

Hitoshi Seo, Takao Tsumuraya, Masahisa Tsuchiizu +2

Electronic properties of quasi-two-dimensional molecular conductors $X$ [Pd(dmit) $_{2}$ ] $_{2}$ are studied theoretically. We construct an effective model based on the fragment molecular…

cond-mat.str-el2012

Spin frustration, charge ordering, and enhanced antiferromagnetism in TMTTF $_{2}$ SbF $_{6}$

Kazuyoshi Yoshimi, Hitoshi Seo, Shoji Ishibashi +1

We theoretically investigate the effects of charge order and spin frustration on the spin ordering in TMTTF salts. Using first-principles band calculations, we find that a diagonal…

cond-mat.supr-con2017

Phase Competition and Superconductivity in $I^º$ -(BEDT-TTF) $_{2}$ X: Importance of Intermolecular Coulomb Interactions

Hiroshi Watanabe, Hitoshi Seo, Seiji Yunoki

We theoretically study the competition among different electronic phases in molecular conductors $I^º$ -(BEDT-TTF) $_{2}$ X. The ground-state properties of a 3/4-filled extended Hubbard…

cond-mat.str-el2019

Photoinduced collective mode, inhomogeneity, and melting in a charge order system

Hitoshi Seo, Yasuhiro Tanaka, Sumio Ishihara

We theoretically investigate photoresponses of a correlated electron system upon stimuli of a pulsed laser light. Real-time dynamics of an interacting spinless fermion model on a o…

cond-mat.str-el1997

Antiferromagnetic Phases of One-Dimensional Quarter-Filled Organic Conductors

Hitoshi Seo, Hidetoshi Fukuyama

The magnetic structure of antiferromagnetically ordered phases of quasi-one-dimensional organic conductors is studied theoretically at absolute zero based on the mean field approxi…

cond-mat.str-el2014

Long-Period Charge Correlations in Charge-Frustrated Molecular theta-(BEDT-TTF)2X

Makoto Naka, Hitoshi Seo

Charge ordering (CO) with long-periodicities in a geometrically frustrated system, theta-(BEDT-TTF)2X, is numerically studied. We consider interacting fermion models on the anisotr…

cond-mat.str-el2023

Comprehensive $ab$ $ini t i o$ investigation of the phase diagram of quasi-one-dimensional molecular solids

Kazuyoshi Yoshimi, Takahiro Misawa, Takao Tsumuraya +1

An $ab$ $ini t i o$ investigation of the family of molecular compounds TM $_{2}$ $X$ is conducted, where TM is either TMTSF or TMTTF and $X$ takes centrosymmetric monovalent anions. By de…

cond-mat.str-el2008

Finite-Temperature Phase Diagram of Quasi-One-Dimensional Molecular Conductors: Quantum Monte Carlo Study

Yuichi Otsuka, Hitoshi Seo, Yukitoshi Motome +1

Finite-temperature phase transitions in quasi-one-dimensional quarter-filled systems are investigated by the extended Hubbard model with electron-lattice coupling. Using a quantum…

cond-mat.str-el2019

Spin current generation in organic antiferromagnets

Makoto Naka, Satoru Hayami, Hiroaki Kusunose +3

Spin current--a flow of electron spins without a charge current--is an ideal information carrier free from Joule heating for electronic devices. The celebrated spin Hall effect, wh…

cond-mat.str-el2014

Magnetic Field Effect in One-Dimensional Charge Ordering Systems

Yuichi Otsuka, Hitoshi Seo, Yukitoshi Motome

We study effects of an external magnetic field on charge ordering in the one-dimensional extended Hubbard model at quarter filling by means of the quantum Monte Carlo method. We fi…

cond-mat.str-el2013

Electronic States of Single-Component Molecular Conductors [M(tmdt)2]

Hitoshi Seo, Shoji Ishibashi, Yuichi Otsuka +2

The electronic states of isostructural single-component molecular conductors [M(tmdt)2] (M= Ni, Au, and Cu) are theoretically studied. By considering fragments of molecular orbital…

cond-mat.mtrl-sci2010

Multi-Orbital Molecular Compound (TTM-TTP)I_3: Effective Model and Fragment Decomposition

Masahisa Tsuchiizu, Yukiko Omori, Yoshikazu Suzumura +4

The electronic structure of the molecular compound (TTM-TTP)I_3, which exhibits a peculiar intra-molecular charge ordering, has been studied using multi-configuration ab initio cal…

cond-mat.str-el2020

Finite Temperature Properties of Geometrically Charge Frustrated Systems

Kazuyoshi Yoshimi, Makoto Naka, Hitoshi Seo

We theoretically study finite temperature properties of interacting fermion systems under geometrical frustration in the charge degree of freedom. Physical quantities such as charg…

cond-mat.str-el2008

Single-Component Molecular Metals as Multiband Ï-d Systems

Hitoshi Seo, Shoji Ishibashi, Yoshinori Okano +4

Electronic states of single-component molecular metals M(tmdt)2 (M = Ni, Au) are studied theoretically. We construct an effective three-band Hubbard model for each material by nume…

cond-mat.str-el2002

One-Dimensional Confinement and Enhanced Jahn-Teller Instability in LaVO $_{3}$

Yukitoshi Motome, Hitoshi Seo, Zhong Fang +1

Ordering and quantum fluctuations of orbital degrees of freedom are studied theoretically for LaVO $_{3}$ in spin-C-type antiferromagnetic state. The effective Hamiltonian for the orb…

cond-mat.str-el1999

Charge Ordering in Organic ET Compounds

Hitoshi Seo

The charge ordering phenomena in quasi two-dimensional 1/4-filled organic compounds (ET)_2X (ET=BEDT-TTF) are investigated theoretically for the $I^¸$ and $I^\pm$ -type structures, base…

cond-mat.str-el2020

First-principles study of the charge ordered phase in $I^º$ -D $_{3}$ (Cat-EDT-TTF/ST) $_{2}$ : Stability of $I ¨ $ -electron deuterium coupled ordering in hydrogen-bonded molecular conductors

Takao Tsumuraya, Hitoshi Seo, Tsuyoshi Miyazaki

We study the electronic and structural properties of the low-temperature ordered phase of hydrogen-bonded molecular conductors, $I^º$ -D $_{3}$ (Cat-EDT-TTF) $_{2}$ and its selenium-substit…

cond-mat.str-el2022

Anomalous Hall effect in antiferromagnetic perovskites

Makoto Naka, Yukitoshi Motome, Hitoshi Seo

We theoretically study the anomalous Hall effect (AHE) in perovskites with antiferromagnetic (AFM) orderings. By studying the multiorbital Hubbard model for $d$ electrons in perovs…

cond-mat.str-el2014

Photo-Induced Dynamics in Charge-Frustrated Systems

Hiroshi Hashimoto, Hiroaki Matsueda, Hitoshi Seo +1

Photo-excited charge dynamics of interacting charge-frustrated systems are studied using a spinless fermion model on an anisotropic triangular lattice. Real-time evolution of the s…

cond-mat.str-el2020

Perovskite as a spin current generator

Makoto Naka, Yukitoshi Motome, Hitoshi Seo

We theoretically show that materials with perovskite-type crystal structures provide a platform for spin current generation, taking advantage of a mechanism requiring neither the s…

cond-mat.supr-con2018

Electronic Structure Calculation and Superconductivity in $I^»$ -(BETS) $_{2}$ GaCl $_{4}$

Hirohito Aizawa, Takashi Koretsune, Kazuhiko Kuroki +1

Quasi-two-dimensional molecular conductor $I^»$ -(BETS) $_{2}$ GaCl $_{4}$ shows superconductivity (SC) below 5.5K, neighboring the dimer-type Mott insulating phase. To elucidate the origin…

cond-mat.str-el2016

Phase Competition, Solitons, and Domain Walls in Neutral-Ionic Transition Systems

Masahisa Tsuchiizu, Hideo Yoshioka, Hitoshi Seo

Phase competition and excitations in the one-dimensional neutral-ionic transition systems are theoretically studied comprehensively. From the semiclassical treatment of the bosoniz…

cond-mat.str-el2015

First-principles study of hydrogen-bonded molecular conductor $I^º$ -H $_{3}$ (Cat-EDT-TTF/ST) $_{2}$

Takao Tsumuraya, Hitoshi Seo, Reizo Kato +1

We theoretically study hydrogen-bonded molecular conductors synthesized recently, $I^º$ -H $_{3}$ (Cat-EDT-TTF) $_{2}$ and its diselena analog, $I^º$ -H $_{3}$ (Cat-EDT-ST) $_{2}$ , by first-principl…

cond-mat.supr-con2019

Mechanism of superconductivity and electron-hole doping asymmetry in $I^º$ -type molecular conductors

Hiroshi Watanabe, Hitoshi Seo, Seiji Yunoki

Unconventional superconductivity in molecular conductors is observed at the border of metal-insulator transitions in correlated electrons under the influence of geometrical frustra…

cond-mat.str-el1998

Charge Ordering and Spin gap in NaV_2O_5

Hitoshi Seo, Hidetoshi Fukuyama

A possible ground state of NaV_2O_5 is proposed based on the Hartree approximation for both on-site and intersite Coulomb interactions. The results indicate that the intersite Coul…

cond-mat.str-el2024

Altermagnetic Perovskites

Makoto Naka, Yukitoshi Motome, Hitoshi Seo

Altermagnet is a class of antiferromagnets, which shows a staggered spin ordering with wave vector $q = 0$ , while its net magnetization is canceled out in the limit of zero rel…

cond-mat.str-el2001

New aspects of Verway transition in magnetite

Hitoshi Seo, Masao Ogata, Hidetoshi Fukuyama

A new mechanism of the Verway transition in magnetite (Fe3O4), which has been argued to be a charge ordering transition so far, is proposed. Based on the mean field calculations fo…

cond-mat.mtrl-sci2025

Combined X-ray diffraction, electrical resistivity, and $ab$ $ini t i o$ study of (TMTTF) $_{2}$ PF $_{6}$ under pressure: implications to the unified phase diagram

Miho Itoi, Kazuyoshi Yoshimi, Hanming Ma +7

We present a combined experimental and theoretical study on the quasi-one-dimensional organic conductor (TMTTF) $_{2}$ PF $_{6}$ , and elucidate the variation of its physical properties un…

cond-mat.str-el2025

Nonrelativistic Piezomagnetic Effect in an Organic Altermagnet

Makoto Naka, Yukitoshi Motome, Tsuyoshi Miyazaki +1

We theoretically study the piezomagnetic effect on the altermagnetic state in $I^º$ -type molecular conductors, focusing on its nonrelativistic mechanism. By introducing shear stress…

cond-mat.str-el2007

Charge-Ordered State versus Dimer-Mott Insulator at Finite Temperatures

Hideo Yoshioka, Masahisa Tsuchiizu, Hitoshi Seo

We theoretically investigate the competition between charge-ordered state and Mott insulating state at finite temperatures in quarter-filled quasi-one-dimensional electron systems,…

cond-mat.str-el2004

Quantum Melting of Charge Order due to Frustration in Two-Dimensional Quarter-Filled Systems

Jaime Merino, Hitoshi Seo, Masao Ogata

The effect of geometrical frustration in a two-dimensional 1/4-filled strongly correlated electron system is studied theoretically, motivated by layered organic molecular crystals.…

cond-mat.str-el2026

Photoinduced melting dynamics and collective mode in a correlated charge-ordered system

Yasuhiro Tanaka, Hitoshi Seo

We theoretically investigate the transient spectral function during the photoinduced melting of charge order in a correlated electron system, to unravel the dynamical processes tri…

cond-mat.str-el2006

Finite-Temperature Charge-Ordering Transition and Fluctuation Effects in Quasi-One-Dimensional Electron Systems at Quarter Filling

Hideo Yoshioka, Masahisa Tsuchiizu, Hitoshi Seo

Finite-temperature charge-ordering phase transition in quasi one-dimensional (1D) molecular conductors is investigated theoretically, based on a quasi 1D extended Hubbard model at…

cond-mat.str-el2012

Tuning the magnetic dimensionality by charge ordering in the molecular TMTTF salts

Kazuyoshi Yoshimi, Hitoshi Seo, Shoji Ishibashi +1

We theoretically investigate the interplay between charge ordering and magnetic states in quasi-one-dimensional molecular conductors TMTTF $_{2} X$ , motivated by the observation of a c…

cond-mat.str-el2020

Anomalous Hall effect in $I^º$ -type organic antiferromagnets

Makoto Naka, Satoru Hayami, Hiroaki Kusunose +3

We theoretically propose a mechanism for the anomalous Hall effect (AHE) in an antiferrromagnetic (AFM) state of $I^º$ -type organic conductors. We incorporate the spin-orbit couplin…

cond-mat.str-el2026

Two routes to quantum anomalous Hall states in altermagnets

Makoto Naka, Shuntaro Sumita, Yukitoshi Motome +1

We theoretically propose two possible routes to realizing quantum anomalous Hall states in altermagnetic materials. We consider a minimal square-lattice Hubbard model with antisymm…

cond-mat.str-el2011

Incommensurate Antiferromagnetic Insulating State in (MDT-TS)(AuI $_{2}$ ) $_{x}$

Hideo Yoshioka, Hitoshi Seo, Yuichi Otsuka

We theoretically study the metal-insulator transition in a molecular conductor (MDT-TS)(AuI $_{2}$ ) $_{x}$ composed with an incommensurate ratio ( $x = 0.441$ ), where the conduction ban…

cond-mat.str-el2005

Incommensurate Mott Insulator in One-Dimensional Electron Systems close to Quarter Filling

Hideo Yoshioka, Hitoshi Seo, Hidetoshi Fukuyama

A possibility of a metal-insulator transition in molecular conductors has been studied for systems composed of donor molecules and fully ionized anions with an incommensurate ratio…

cond-mat.str-el2015

Theory of Valence Transition in BiNiO $_{3}$

Makoto Naka, Hitoshi Seo, Yukitoshi Motome

Motivated by the colossal negative thermal expansion recently found in BiNiO $_{3}$ , the valence transition accompanied by the charge transfer between the Bi and Ni sites is theoretic…

cond-mat.str-el2006

Theoretical Aspects of Charge Ordering in Molecular Conductors

Hitoshi Seo, Jaime Merino, Hideo Yoshioka +1

Theoretical studies on charge ordering phenomena in quarter-filled molecular (organic) conductors are reviewed. Extended Hubbard models including not only the on-site but also the…

cond-mat.str-el1998

On the Spin Gap Phase in lambda-(BETS)_2GaX_zY_{4-z}

Hitoshi Seo, Hidetoshi Fukuyama

The nature of the insulating ground state in quasi-two-dimensional organic conductor lambda-(BETS)_2GaX_zY_{4-z}, where the existence of a spin gap is suggested by susceptibility m…

cond-mat.str-el1999

Interplay between Structure and Electronic Properties in Organic Conductors

Hidetoshi Fukuyama, Hitoshi Seo, Hiori Kino

It is known that the ground states of organic conductors have a diversity reflecting the spatial arrangement of the constituent molecules within the unit cell. A systematic theoret…

cond-mat.str-el2006

Charge Fluctuations in Geometrically Frustrated Charge Ordering System

Hitoshi Seo, Kenji Tsutui, Masao Ogata +1

Effects of geometrical frustration in low-dimensional charge ordering systems are theoretically studied, mainly focusing on dynamical properties. We treat extended Hubbard models a…

Publications (58)

Phase-modulated superconductivity via altermagnetism

Coexistence of Charge Order and Spin-Peierls Lattice Distortion in One-Dimensional Organic Conductors

Stability of correlated insulating states in molecular conductors from first-principles calculation

Antiferromagnetic State in I^º-type Molecular Conductors: Spin Splitting and Mott Gap

Phase competitions and coexistences in quasi-one-dimensional molecular conductors: exact diagonalization study

Finite-temperature phase transitions in quasi-one-dimensional molecular conductors

Fulde-Ferrell-Larkin-Ovchinnikov state induced by antiferromagnetic order in I^º-type organic conductors

Photo-Induced Phase Transition in Charge Order Systems --Charge Frustration and Interplay with Lattice--

Quasi-one-dimensional Spin Dynamics in a Molecular Spin Liquid System

Spiral charge frustration in molecular conductor (DI-DCNQI)2Ag

Re-entrant Behavior and Gigantic Response in Disordered Spin-Peierls System

Cation Dependence of the Electronic States in Molecular Triangular Lattice System Î²'-X[Pd(dmit)_2]_2: A First-principles study

Photoinduced inhomogeneous melting of charge order by ultrashort pulsed light excitation

Finite-Temperature Properties across the Charge Ordering Transition -- Combined Bosonization, Renormalization Group, and Numerical Methods

Frustrated Spin System in theta-(BEDT-TTF)_2RbZn(SCN)_4

Fragment Model Study of Molecular Multi-Orbital System X[Pd(dmit)2​]2​

Spin frustration, charge ordering, and enhanced antiferromagnetism in TMTTF2​SbF6​

Phase Competition and Superconductivity in I^º-(BEDT-TTF)2​X: Importance of Intermolecular Coulomb Interactions

Photoinduced collective mode, inhomogeneity, and melting in a charge order system

Antiferromagnetic Phases of One-Dimensional Quarter-Filled Organic Conductors

Long-Period Charge Correlations in Charge-Frustrated Molecular theta-(BEDT-TTF)2X

Comprehensive ab initio investigation of the phase diagram of quasi-one-dimensional molecular solids

Finite-Temperature Phase Diagram of Quasi-One-Dimensional Molecular Conductors: Quantum Monte Carlo Study

Spin current generation in organic antiferromagnets

Magnetic Field Effect in One-Dimensional Charge Ordering Systems

Electronic States of Single-Component Molecular Conductors [M(tmdt)2]

Multi-Orbital Molecular Compound (TTM-TTP)I_3: Effective Model and Fragment Decomposition

Finite Temperature Properties of Geometrically Charge Frustrated Systems

Single-Component Molecular Metals as Multiband Ï-d Systems

One-Dimensional Confinement and Enhanced Jahn-Teller Instability in LaVO3​

Charge Ordering in Organic ET Compounds

First-principles study of the charge ordered phase in I^º-D3​(Cat-EDT-TTF/ST)2​: Stability of I¨-electron deuterium coupled ordering in hydrogen-bonded molecular conductors

Anomalous Hall effect in antiferromagnetic perovskites

Photo-Induced Dynamics in Charge-Frustrated Systems

Perovskite as a spin current generator

Electronic Structure Calculation and Superconductivity in I^»-(BETS)2​GaCl4​

Phase Competition, Solitons, and Domain Walls in Neutral-Ionic Transition Systems

First-principles study of hydrogen-bonded molecular conductor I^º-H3​(Cat-EDT-TTF/ST)2​

Mechanism of superconductivity and electron-hole doping asymmetry in I^º-type molecular conductors

Charge Ordering and Spin gap in NaV_2O_5

Altermagnetic Perovskites

New aspects of Verway transition in magnetite

Combined X-ray diffraction, electrical resistivity, and ab initio study of (TMTTF)2​PF6​ under pressure: implications to the unified phase diagram

Nonrelativistic Piezomagnetic Effect in an Organic Altermagnet

Charge-Ordered State versus Dimer-Mott Insulator at Finite Temperatures

Quantum Melting of Charge Order due to Frustration in Two-Dimensional Quarter-Filled Systems

Photoinduced melting dynamics and collective mode in a correlated charge-ordered system

Finite-Temperature Charge-Ordering Transition and Fluctuation Effects in Quasi-One-Dimensional Electron Systems at Quarter Filling

Tuning the magnetic dimensionality by charge ordering in the molecular TMTTF salts

Anomalous Hall effect in I^º-type organic antiferromagnets

Two routes to quantum anomalous Hall states in altermagnets

Incommensurate Antiferromagnetic Insulating State in (MDT-TS)(AuI2​)x​

Incommensurate Mott Insulator in One-Dimensional Electron Systems close to Quarter Filling

Theory of Valence Transition in BiNiO3​

Theoretical Aspects of Charge Ordering in Molecular Conductors

On the Spin Gap Phase in lambda-(BETS)_2GaX_zY_{4-z}

Interplay between Structure and Electronic Properties in Organic Conductors

Charge Fluctuations in Geometrically Frustrated Charge Ordering System

Antiferromagnetic State in $I^º$ -type Molecular Conductors: Spin Splitting and Mott Gap

Fulde-Ferrell-Larkin-Ovchinnikov state induced by antiferromagnetic order in $I^º$ -type organic conductors

Fragment Model Study of Molecular Multi-Orbital System $X$ [Pd(dmit) $_{2}$ ] $_{2}$

Spin frustration, charge ordering, and enhanced antiferromagnetism in TMTTF $_{2}$ SbF $_{6}$

Phase Competition and Superconductivity in $I^º$ -(BEDT-TTF) $_{2}$ X: Importance of Intermolecular Coulomb Interactions

Comprehensive $ab$ $ini t i o$ investigation of the phase diagram of quasi-one-dimensional molecular solids

Single-Component Molecular Metals as Multiband Ï-d Systems

One-Dimensional Confinement and Enhanced Jahn-Teller Instability in LaVO $_{3}$

First-principles study of the charge ordered phase in $I^º$ -D $_{3}$ (Cat-EDT-TTF/ST) $_{2}$ : Stability of $I ¨ $ -electron deuterium coupled ordering in hydrogen-bonded molecular conductors

Electronic Structure Calculation and Superconductivity in $I^»$ -(BETS) $_{2}$ GaCl $_{4}$

First-principles study of hydrogen-bonded molecular conductor $I^º$ -H $_{3}$ (Cat-EDT-TTF/ST) $_{2}$

Mechanism of superconductivity and electron-hole doping asymmetry in $I^º$ -type molecular conductors

Combined X-ray diffraction, electrical resistivity, and $ab$ $ini t i o$ study of (TMTTF) $_{2}$ PF $_{6}$ under pressure: implications to the unified phase diagram

Anomalous Hall effect in $I^º$ -type organic antiferromagnets

Incommensurate Antiferromagnetic Insulating State in (MDT-TS)(AuI $_{2}$ ) $_{x}$

Theory of Valence Transition in BiNiO $_{3}$