A5018030561- Advanced Condensed Matter Physics
- Physics of Superconductivity and Magnetism
- Quantum and electron transport phenomena
- Quantum many-body systems
- Organic and Molecular Conductors Research
- Neural Networks and Reservoir Computing
- Quantum chaos and dynamical systems
- Topological Materials and Phenomena
- Various Chemistry Research Topics
- Inorganic Fluorides and Related Compounds
- Metal-Organic Frameworks: Synthesis and Applications
- Lanthanide and Transition Metal Complexes
- Magnetic and transport properties of perovskites and related materials
- Magnetism in coordination complexes
- Iron-based superconductors research
- Random lasers and scattering media
Okinawa Institute of Science and Technology Graduate University
2024-2025
The University of Queensland
2016-2022
Electron-electron interactions in materials lead to exotic many-body quantum phenomena, including Mott metal-insulator transitions (MITs), magnetism, spin liquids, and superconductivity. These phases depend on electronic band occupation can be controlled via the chemical potential. Flat bands two-dimensional (2D) layered with a kagome lattice enhance correlations. Although theoretically predicted, correlated-electron insulating monolayer 2D metal-organic frameworks (MOFs) structure have not...
We demonstrate the existence of an insulating phase in three-legged Hubbard ladder at two-thirds filling. In this chargons are bound because physics within a unit cell favors formation triplets. The resultant moments lead to ground state Haldane phase, symmetry protected topological matter. purely fermionic model, reflection is protecting but time-reversal and dihedral symmetries not, contrast spin models.
Magnetically frustrated spin systems compose a significant proportion of topological quantum liquid candidates. Evidence for liquids in these materials comes largely from the detection fractionalised spin-1/2 quasiparticles, known as spinons. However, one-dimensional Heisenberg chain, which is topologically trivial, also hosts Thus, observing spinons does not necessarily signify long-range entanglement. Here, we show that arising physics leave clear fingerprint magnetic Raman scattering. We...
We report ten ground states arising from strong correlations in the single-orbital Hubbard model on decorated honeycomb lattice; including Dirac metals, flat-band ferromagnets, real-space Mott insulators, dimer and trimer a spin-$1$ insulator. The rich phase diagram arises structures within unit cell. Hence, such are absent simpler lattices. argue that insulating phases prevalent These found many materials common coordination polymers, providing playground to explore this physics.
We study the interplay of strong electron correlations and intratriangle spin exchange at two-thirds filling single-orbital Hubbard model on decorated honeycomb lattice using rotationally invariant slave bosons. find that tunes between a spin-1 Mott insulator, metal, spin-0 insulator when is antiferromagnetic. The insulators occur from effective multiorbital interactions are adiabatically connected to ground state an isolated triangle. An antiferromagnetic exchange, as determined by...
Simulating chemistry is likely to be among the earliest applications of quantum computing. However, existing digital algorithms for chemical simulation require many logical qubits and gates, placing practical beyond technology. Here, we use an analog approach carry out first simulations reactions. In particular, simulate photoinduced non-adiabatic dynamics, one most challenging classes problems in because they involve strong coupling entanglement between electronic nuclear motions. We a...
We derive and study a model of square planar, d8 spin crossover materials that treats elastic, magnetic spin-orbit interactions on an equal footing. For 1D chains density matrix renormalization group calculations show the competition between these leads to six different phases. weak coupling (SOC) large antiferromagnetic we find symmetry protected topological (SPT) Haldane phase. This is equivalent Haldane-large-D phase transition driven by single ion anisotropy(D) in spin-one Heisenberg...
Electron-electron interactions in materials lead to exotic many-body quantum phenomena including Mott metal-insulator transitions (MITs), magnetism, spin liquids, and superconductivity. These phases depend on electronic band occupation can be controlled via the chemical potential. Flat bands two-dimensional (2D) layered with a kagome lattice enhance correlations. Although theoretically predicted, correlated-electron insulating monolayer 2D metal-organic frameworks (MOFs) structure have not...
We study the single-orbital Hubbard model on half-filled decorated honeycomb lattice. In noninteracting theory at half filling Fermi energy lies within a flat band where strong correlations are enhanced. The lattice is highly frustrated. find correlation driven first-order metal-insulator transition to two different insulating ground states---a dimer valence bond solid Mott insulator when intertriangle dominate, and broken ${C}_{3}$-symmetry antiferromagnet that arises from frustration...
Boson sampling is a paradigmatic example of task that can be performed by quantum photonic computer yet hard for digital classical computers. In typical boson experiment, the scattering amplitude determined permanent submatrix unitary drawn from an ensemble random matrices. Random matrix theory plays very important role in quite diverse fields while at same time being intimately related to signatures chaos. Within this framework, chaotic system exhibits level statistics characteristic...