8 citations · 31 across the 11 of their papers we have counts for
14 papers
Superconducting landscape of the strongly correlated bilayer Hubbard model
Motoharu Kitatani, Yusuke Nomura, Shiro Sakai +1
Coupling two strongly correlated layers opens a distinct route to repulsion-driven superconductivity. Yet the same interlayer coupling makes the optimization of superconductivity h…
Observation of complex orbital order in MnV2O4
Chihaya Koyama, Shunsuke Kitou, Taishun Manjo +8
Orbital ordering in vanadium spinel oxides with a geometrically frustrated pyrochlore structure has been a subject of controversy, owing to competing theoretical models and the abs…
Observation of g-wave altermagnetic multipole
Ryo Misawa, Rikuto Oiwa, Shunsuke Kitou +16
Over the past few years, altermagnets have emerged as a new class of collinear magnets with broken time-reversal symmetry, offering novel opportunities for spintronics beyond conve…
Probing the Dynamical Structure Factor of Quantum Spin Chains via Low-Temperature Gibbs States with Matrix Product State Subspace Expansion
Tomoya Takahashi, Wei-Lin Tu, Ji-Yao Chen +1
Studying finite-temperature properties with tensor networks is notoriously difficult, especially at low temperatures, due to the rapid growth of entanglement and the complexity of…
First-Principles Approach to Spin Excitations in Noncollinear Magnetic Systems
Hsiao-Yi Chen, Ryotaro Arita, Yusuke Nomura
We present a first-principles method based on density functional theory and many-body perturbation theory for computing spin excitations in magnetic systems with noncollinear spin…
Luttinger surface and exchange splitting induced by ferromagnetic fluctuations
Motoharu Kitatani, Yusuke Nomura, Shiro Sakai +1
Ferromagnetism in the single-orbital Hubbard model, which contains only local Coulomb repulsion and no explicit ferromagnetic exchange interactions, has been extensively studied. H…
Symmetry-breaking perturbations in the Jahn-Teller-Hubbard model
Natsuki Okada, Tatsuya Miki, Yusuke Nomura +2
We study the effect of symmetry-breaking perturbations in the multiorbital Hubbard model coupled to anisotropic Jahn-Teller phonons, which is relevant for the description of fuller…
Strong-coupling high- superconductivity in doped correlated band insulators
Yusuke Nomura, Motoharu Kitatani, Shiro Sakai +1
We explore the superconducting properties of the bilayer Hubbard model, which exhibits a high transition temperature () for an pairing, using a cluster extensi…
Ab initio study on heavy-fermion behavior in LiVO: Role of Hund's coupling and stability
Steffen Backes, Yusuke Nomura, Ryotaro Arita +1
LiVO is a member of the so-called heavy fermion compounds, with effective electron mass exceeding 60 times the free electron mass, comparable to heavy fermion com…
Quantum many-body solver using artificial neural networks and its applications to strongly correlated electron systems
Yusuke Nomura, Masatoshi Imada
With the evolution of numerical methods, we are now aiming at not only qualitative understanding but also quantitative prediction and design of quantum many-body phenomena. As a no…
Visualization of spin-orbit entangled 4f electrons in crystalline materials
Shunsuke Kitou, Kentaro Ueda, Yuiga Nakamura +5
Lanthanide 4f electrons are strongly influenced by spin-orbit coupling, resulting in well-defined J multiplets, which are further split by the crystalline electric field in condens…
Derivation of low-energy Hamiltonians for heavy-fermion Materials
E. A. Ghioldi, Zhentao Wang, L. M. Chinellato +7
By utilizing a multi-orbital periodic Anderson model with parameters obtained from \textit{ab initio} band structure calculations, combined with degenerate perturbation theory, we…
Bypassing the lattice BCS-BEC crossover in strongly correlated superconductors: resilient coherence from multiorbital physics
Niklas Witt, Yusuke Nomura, Sergey Brener +3
Superconductivity emerges from the spatial coherence of a macroscopic condensate of Cooper pairs. Increasingly strong binding and localization of electrons into these pairs comprom…
Magnetic structures and electronic properties of cubic-pyrochlore ruthenates from first principles
Marie-Therese Huebsch, Yuske Nomura, Shiro Sakai +1
The magnetic ground states of RuO and RuO with Pr, Gd, Ho, and Er, as well as Ca, Cd are predicted devising a combination of the cluster-multipo…