153 citations · 567 across the 30 of their papers we have counts for
17 papers · 1 filter
Chiral Antiferromagnetism from Momentum-Space Resonance in a 2D Semiconductor
R. Okuma, T. Ikenobe, Y. Fujisawa +28
Understanding the principles governing the emergence of chiral quantum phases is a fundamental challenge, not only for uncovering new mechanisms of quantum-state formation but also…
Semiclassical representation of the Hubbard model
Yuki Yamasaki, Hidemaro Suwa, Cristian D. Batista +1
By revisiting the path-integral formulation of the Hubbard model, we propose a theoretical approach based on a semiclassical approximation employing an unconventional coherent-stat…
Unified Description of Spin-Lattice Coupling and Thermodynamics in the Pyrochlore Heisenberg Antiferromagnet
Masaki Gen, Hidemaro Suwa, Shusaku Imajo +6
We study an extended model to describe the spin-lattice coupling, incorporating individual vibrations of bonds and atomic sites alongside distance-dependent exchange interactions.…
Electronic Raman scattering of antiferromagnetic excitonic insulators
Hidemaro Suwa, Shang-Shun Zhang, Cristian D. Batista
The excitonic insulator, a quantum mechanical state arising from exciton condensation, was proposed theoretically many years ago but has yet to be experimentally confirmed. The dis…
Extraordinary magnetic response of an anisotropic 2D antiferromagnet via site-dilution
Junyi Yang, Hidemaro Suwa, Derek. Meyers +9
A prominent character of two-dimensional magnetic systems is the enhanced spin fluctuations, which however reduce the ordering temperature. Here we report that a magnetic field of…
Matrix Product Renormalization Group: Potential Universal Quantum Many-Body Solver
Masahiko G. Yamada, Takumi Sanno, Masahiro O. Takahashi +4
The density matrix renormalization group (DMRG) is a celebrated tensor network algorithm, which computes the ground states of one-dimensional quantum many-body systems very efficie…
BCS-BEC Crossover of Triplet Exciton Condensation in Bilayer Systems
Hidemaro Suwa, Shang-Shun Zhang, Cristian D. Batista
We study the BCS-BEC crossover phenomenon of triplet exciton condensation using a half-filled bilayer Hubbard model. We calculate the dynamical spin structure factor and the excito…
Quasi-2D anomalous Hall Mott insulator of topologically engineered Jeff =1/2 electrons
Junyi Yang, Hidemaro Suwa, Derek Meyers +12
We investigate an experimental toy-model system of a pseudospin-half square-lattice Hubbard Hamiltonian in [(SrIrO3)1/(CaTiO3)1] to include both nontrivial complex hopping and mode…
Nematicity and fractional magnetization plateaus induced by spin-lattice coupling in the classical kagome-lattice Heisenberg antiferromagnet
Masaki Gen, Hidemaro Suwa
We investigate the effect of spin-lattice coupling (SLC) on the magnetic properties of the classical kagome-lattice Heisenberg antiferromagnet (KHAF) using improved Monte Carlo upd…
Exciton condensation in bilayer spin-orbit insulator
Hidemaro Suwa, Shang-Shun Zhang, Cristian D. Batista
We investigate the nature of the magnetic excitations of a bilayer single-orbital Hubbard model in the intermediate-coupling regime. This model exhibits a quantum phase transition…
Spin-lattice coupling in a ferrimagnetic spinel: The exotic - phase diagram of MnCrS up to 110 T
A. Miyata, H. Suwa, T. Nomura +10
In antiferromagnets, the interplay of spin frustration and spin-lattice coupling has been extensively studied as the source of complex spin patterns and exotic magnetism. Here, we…
Machine learning for molecular dynamics with strongly correlated electrons
Hidemaro Suwa, Justin S. Smith, Nicholas Lubbers +3
We use machine learning to enable large-scale molecular dynamics (MD) of a correlated electron model under the Gutzwiller approximation scheme. This model exhibits a Mott transitio…
Giant magnetic response of a two-dimensional antiferromagnet
Lin Hao, D. Meyers, Hidemaro Suwa +14
A fundamental difference between antiferromagnets and ferromagnets is the lack of linear coupling to a uniform magnetic field due to the staggered order parameter. Such coupling is…
Semiclassical dynamics of spin density waves
Gia-Wei Chern, Kipton Barros, Zhentao Wang +2
We present a theoretical framework for equilibrium and nonequilibrium dynamical simulation of quantum states with spin-density-wave (SDW) order. Within a semiclassical adiabatic ap…
Magnetization process of the S = 1/2 two-leg organic spin-ladder compound BIP-BNO
Kazuya Nomura, Yasuhiro H. Matsuda, Yasuo Narumi +7
We have measured the magnetization of the organic compound BIP-BNO (3,5'-bis(N-tert-butylaminoxyl)-3',5-dibromobiphenyl) up to 76 T where the magnetization is saturated. The S = 1/…
Level spectroscopy in a two-dimensional quantum magnet: Linearly dispersing spinons at the deconfined quantum critical point
Hidemaro Suwa, Arnab Sen, Anders W. Sandvik
We study the level structure of excitations at the "deconfined" critical point separating antiferromagnetic and valence-bond-solid phases in two-dimensional quantum spin systems us…
Velocity of excitations in ordered, disordered and critical antiferromagnets
Arnab Sen, Hidemaro Suwa, Anders W. Sandvik
We test three different approaches, based on quantum Monte Carlo simulations, for computing the velocity of triplet excitations in antiferromagnets. We consider the standard $S…