793 citations · 10.5k across the 194 of their papers we have counts for
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Quantum criticality of bandwidth-controlled Mott transition
Kensaku Takai, Youhei Yamaji, Fakher F. Assaad +1
Metallic states near the Mott insulator show a variety of quantum phases including various magnetic, charge ordered states and high-temperature superconductivity in various transit…
Exciton dynamics uncovering electron fractionalization in superconducting cuprates
A. Singh, H. Y. Huang, J. D. Xie +6
Electron quasiparticles play a crucial role in simplifying the description of many-body physics in solids with surprising success. Conventional Landau's Fermi-liquid and quasiparti…
low-energy effective Hamiltonians for high-temperature superconducting cuprates BiSrCuO, BiSrCaCuO, HgBaCuO and CaCuO
Jean-Baptiste Morée, Motoaki Hirayama, Michael Thobias Schmid +2
We derive low-energy effective Hamiltonians (LEH) for high-temperature superconducting (SC) copper oxides BiSrCuO (Bi2201, , $T_c^{\rm exp} \s…
Unconventional dual 1D-2D quantum spin liquid revealed by studies on organic solids family
Kota Ido, Kazuyoshi Yoshimi, Takahiro Misawa +1
Organic solids host various electronic phases. Especially, a milestone compound of organic solid, -[Pd(dmit)] with =EtMeSb shows quantum spin-liquid (QSL) pro…
Charge Order and Superconductivity as Competing Brothers in Cuprate High- Superconductors
Masatoshi Imada
Studies on the interplay between the charge order and the -wave superconductivity in the copper-oxide high superconductors are reviewed with a special emphasis on th…
Ab initio Derivation of Low-Energy Hamiltonians for Systems with Strong Spin-Orbit Interaction and Its Application to Ca5Ir3O12
Maxime Charlebois, Jean-Baptiste Morée, Kazuma Nakamura +7
We present an ab initio derivation method for effective low-energy Hamiltonians of material with strong spin-orbit interactions. The effective Hamiltonian is described in terms of…
Resonant Inelastic X-Ray Scattering Spectra of Cuprate Superconductors Predicted by Model of Fractionalized Fermions
Masatoshi Imada
We theoretically analyze the intensity of the resonant inelastic X-ray scattering (RIXS) based on Ansatz that the electron is fractionalized into two components. By fitting the ang…
Local moments versus itinerant antiferromagnetism: magnetic phase diagram and spectral properties of the anisotropic square lattice Hubbard model
Marcin Raczkowski, Fakher F. Assaad, Masatoshi Imada
Using a cluster extension of the dynamical mean-field theory (CDMFT) we map out the magnetic phase diagram of the anisotropic square lattice Hubbard model with nearest-neighbor int…
Dirac-type nodal spin liquid revealed by refined quantum many-body solver using neural-network wave function, correlation ratio, and level spectroscopy
Yusuke Nomura, Masatoshi Imada
Pursuing fractionalized particles that do not bear properties of conventional measurable objects, exemplified by bare particles in the vacuum such as electrons and elementary excit…
Single-particle spectral function formulated and calculated by variational Monte Carlo method with application to -wave superconducting state
Maxime Charlebois, Masatoshi Imada
A method to calculate the one-body Green's function for ground states of correlated electron materials is formulated by extending the variational Monte Carlo method. We benchmark a…
Charge dynamics of correlated electrons: Variational description with inclusion of composite fermions
Kota Ido, Masatoshi Imada, Takahiro Misawa
We propose a method to calculate the charge dynamical structure factors for the ground states of correlated electron systems based on the variational Monte Carlo method. Our benchm…
Hidden self-energies as origin of cuprate superconductivity revealed by machine learning
Youhei Yamaji, Teppei Yoshida, Atsushi Fujimori +1
Experimental data are the source of understanding matter. However, measurable quantities are limited and theoretically important quantities are sometimes hidden. Nonetheless, recen…
derivation of effective Hamiltonian for LaCuO/LaSrCuO heterostructure
Terumasa Tadano, Yusuke Nomura, Masatoshi Imada
We formulate a method of deriving effective low-energy Hamiltonian for nonperiodic systems such as interfaces for strongly correlated electron systems by extending conventional mul…
Ab Initio Study on Superconductivity and Inhomogeneity in Hg-based Cuprate Superconductor
Takahiro Ohgoe, Motoaki Hirayama, Takahiro Misawa +3
Understanding physics of high- cuprate superconductors remains one of the important problems in materials science. Though a number of diverse theories argue about the supercon…
Effective Hamiltonian for cuprate superconductors derived from multi-scale ab initio scheme with level renormalization
Motoaki Hirayama, Takahiro Misawa, Takahiro Ohgoe +2
Three-types (three-band, two-band and one-band) of effective Hamiltonians for the HgBaCuO and three-band effective Hamiltonian for LaCuO are derived beyond the leve…
Stripe and superconducting order competing in the Hubbard model on a square lattice studied by a combined variational Monte Carlo and tensor network method
Andrew S. Darmawan, Yusuke Nomura, Youhei Yamaji +1
The long-studied Hubbard model is one of the simplest models of copper-oxide superconductors. However, the connection between the model and the experimental phase diagram is still…
Direct Connection between Mott Insulator and d-Wave High-Temperature Superconductor Revealed by Continuous Evolution of Self-Energy Poles
Shiro Sakai, Marcello Civelli, Masatoshi Imada
The high-temperature superconductivity in copper oxides emerges when carriers are doped into the parent Mott insulator. This well-established fact has, however, eluded a microscopi…
Excitons and Dark Fermions as Origins of Mott Gap, Pseudogap and Superconductivity in Cuprate Superconductors --- General Idea and Basic Concept Based on Gap Physics
Masatoshi Imada, Takafumi J. Suzuki
Theory of doped Mott insulators is revisited in the light of recent understanding on the singular self-energy structure of the single-particle Green's function. The unique pole str…
Superconductivity Emerging from Excitonic Mott insulator - Theory of Alkaline Doped Fullerene
Takahiro Misawa, Masatoshi Imada
A three-orbital model derived from the two-dimensional projection of the Hamiltonian for alkaline doped fullerene AC with A=Cs,Rb,K is studied by a variati…
mVMC - Open-source software for many-variable variational Monte Carlo method
Takahiro Misawa, Satoshi Morita, Kazuyoshi Yoshimi +6
mVMC (many-variable Variational Monte Carlo) is an open-source software based on the variational Monte Carlo method applicable for a wide range of Hamiltonians for interacting ferm…
Restricted-Boltzmann-Machine Learning for Solving Strongly Correlated Quantum Systems
Yusuke Nomura, Andrew S. Darmawan, Youhei Yamaji +1
We develop a machine learning method to construct accurate ground-state wave functions of strongly interacting and entangled quantum spin as well as fermionic models on lattices. A…
Variational Monte Carlo method for fermionic models combined with tensor networks and applications to the hole-doped two-dimensional Hubbard model
Hui-Hai Zhao, Kota Ido, Satoshi Morita +1
The conventional tensor-network states employ real-space product states as reference wave functions. Here, we propose a many-variable variational Monte Carlo (mVMC) method combined…
Ground state properties of determined from Hamiltonian and its extensions containing Kitaev and extended Heisenberg interactions
Tsuyoshi Okubo, Kazuya Shinjo, Youhei Yamaji +4
We investigate the ground state properties of based on numerical calculations of the recently proposed {\it ab initio} Hamiltonian represented by Kitaev and ex…
Self-Optimized Superconductivity Attainable by Interlayer Phase Separation at Cuprate Interfaces
Takahiro Misawa, Yusuke Nomura, Silke Biermann +1
Stabilizing superconductivity at high temperatures and elucidating its mechanism have long been major challenges of materials research in condensed matter physics. Meanwhile, recen…