404 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- RIKENJP239 papers
- The University of TokyoJP113 papers
- The University of OsakaJP73 papers
- Centre National de la Recherche ScientifiqueFR71 papers
- Nagoya UniversityJP64 papers
- National Astronomical Observatory of JapanJP52 papers
- RIKEN Center for Emergent Matter ScienceJP50 papers
- Arcetri Astrophysical ObservatoryIT49 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TorinoIT47 papers
- Université Grenoble AlpesFR46 papers
- Institut de Planétologie et d'Astrophysique de GrenobleFR44 papers
- The Graduate University for Advanced Studies, SOKENDAIJP44 papers
20 papers · 1 filter
Low-energy photoexcitations inside the Mott gap in doped Hubbard and t-J ladders
Sumal Chandra, Kazuya Shinjo, Shigetoshi Sota +2
We investigate changes in the optical conductivity of doped Mott insulators by tuning ultrashort pump pulses to target either the Drude or low-energy absorption regions. Using a ho…
Radiative Higgs mode in photoinduced pairs
Satoshi Ejima, Benedikt Fauseweh
We demonstrate that the symmetry of the pump-induced -pairing state in the Hubbard chain can be transiently broken by an additionally applied probe pulse. This leads to char…
Spin and charge dynamics of doped one-dimensional Mott insulators
Takami Tohyama, Hiroki Maeda, Kenji Tsutsui +2
Recent angle-resolved photoemission spectroscopy (ARPES) for a newly discovered doped one-dimensional (1D) Mott insulator BaSrCuO proposed the presence of attra…
Spin-orbit enabled unconventional Stoner magnetism
Yue Yu, Tatsuya Shishidou, Shuntaro Sumita +2
The Stoner instability remains a cornerstone for understanding metallic ferromagnets. This instability captures the interplay of Coulomb repulsion, Pauli exclusion, and two-fold fe…
Spin loop-current textures in Hubbard models
Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki +1
The recent experimental observations of loop current in SrIrO, YBaCuO, and SrCuO have inspired a theoretical study that broadly r…
Anomalous suppression of photo-induced in-gap weight in the optical conductivity of a two-leg Hubbard ladder
Takami Tohyama, Kazuya Shinjo, Shigetoshi Sota +1
Photoinduced nonequilibrium states in the Mott insulators reflect the fundamental nature of competition between itinerancy and localization of the charge degrees of freedom. The sp…
Magnetic Properties of Multifunctional LiFePO under Hydrostatic Pressure
Ugne Miniotaite, Ola Kenji Forslund, Elisabetta Nocerino +12
LiFePO (LFPO) is an archetypical and well-known cathode material for rechargeable Li-ion batteries. However, its quasi-one-dimensional (Q1D) structure along with the Fe ions, L…
Controlling inversion and time-reversal symmetries by subcycle pulses in the one-dimensional extended Hubbard model
Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki +1
Owning to their high controllability, laser pulses have contributed greatly to our understanding of strongly correlated electron systems. However, typical multicycle pulses do not…
Skyrmion lattice hosted in synthetic antiferromagnets and helix modes
X. -G. Wang, L. Chotorlishvili, G. Tatara +6
Thin ferromagnetic films can possess unconventional magnetic properties, opening a new road for using them in spintronic technologies. In the present work exploiting three differen…
Variational counterdiabatic driving of the Hubbard model for ground-state preparation
Q Xie, Kazuhiro Seki, Seiji Yunoki
Counterdiabatic (CD) protocols enable fast driving of quantum states by invoking an auxiliary adiabatic gauge potential (AGP) that suppresses transitions to excited states througho…
Local multiplet formation around a single vacancy in graphene: an effective Anderson model analysis based on the block-Lanczos DMRG method
Tomonori Shirakawa, Seiji Yunoki
To better understand the electronic structure of a single vacancy in graphene, we study the ground state property of an effective Anderson model, consisting of three dangling $sp^2…
Purifying Deep Boltzmann Machines for Thermal Quantum States
Yusuke Nomura, Nobuyuki Yoshioka, Franco Nori
We develop two cutting-edge approaches to construct deep neural networks representing the purified finite-temperature states of quantum many-body systems. Both methods commonly aim…
Solving Quasiparticle Band Spectra of Real Solids using Neural-Network Quantum States
Nobuyuki Yoshioka, Wataru Mizukami, Franco Nori
Establishing a predictive ab initio method for solid systems is one of the fundamental goals in condensed matter physics and computational materials science. The central challenge…
Photoinduced -pairing at finite temperatures
Satoshi Ejima, Tatsuya Kaneko, Florian Lange +2
We numerically prove photoinduced -pairing in a half-filled fermionic Hubbard chain at both zero and finite temperature. The result, obtained by combining the matrix-product-sta…
Stable Higgs mode in anisotropic quantum magnets
Ying Su, A. Masaki-Kato, Wei Zhu +3
Low-energy excitations associated with the amplitude fluctuation of an order parameter in condensed matter systems can mimic the Higgs boson, an elementary particle in the standard…
Photoinduced electron-electron pairing in the extended Falicov-Kimball model
Ryo Fujiuchi, Tatsuya Kaneko, Yukinori Ohta +1
By employing the time-dependent exact diagonalization method, we investigate the photoexcited states of the excitonic insulator in the extended Falicov-Kimball model (EFKM). We her…
Machine Learning Phase Diagram in the Half-filled One-dimensional Extended Hubbard Model
Kazuya Shinjo, Kakeru Sasaki, Satoru Hase +4
We demonstrate that supervised machine learning (ML) with entanglement spectrum can give useful information for constructing phase diagram in the half-filled one-dimensional extend…
Evidence of Low-Energy Singlet Excited States in the Spin-1/2 Polyhedral Clusters {MoV} and {WV} with Strongly Frustrated Kagomé Networks
T. Kihara, H. Nojiri, Y. Narumi +5
Magnetization, specific heat, and electron spin resonance (ESR) measurements are carried out to clarify the low-energy excitations for the S = 1/2 polyhedral clusters {MoV$_…
Fermi-liquid ground state of interacting Dirac fermions in two dimensions
Kazuhiro Seki, Yuichi Otsuka, Seiji Yunoki +1
An unbiased zero-temperature auxiliary-field quantum Monte Carlo method is employed to analyze the nature of the semimetallic phase of the two-dimensional Hubbard model on the hone…
Topological property of a system with a honeycomb lattice structure
Beom Hyun Kim, Kazuhiro Seki, Tomonori Shirakawa +1
A system with a honeycomb lattice structure such as NaIrO was firstly proposed as a topological insulator even though NaIrO and its isostructural materia…