59 citations · 100 across the 11 of their papers we have counts for
11 papers
Theory of clusterization in orbitally degenerate transition-metal compounds driven by lattice instabilities
Soshun Ozaki, Kota Mitsumoto, Chisa Hotta
We derive an effective orbital-lattice model with quantum degrees of freedom for transition-metal compounds, providing a microscopic understanding of cluster formation driven…
Orbital-Zeeman cross correlation in - and -wave altermagnets
Tomonari Mizoguchi, Soshun Ozaki
Altermagnets are a novel class of magnets that exhibit a large spin splitting but the total magnetic moment is vanishing. This unconventional spin splitting gives rise to various c…
Orbital Magnetism in Honeycomb Ladder
Tomonari Mizoguchi, Soshun Ozaki, Hiroyasu Matsuura
We investigate the orbital magnetic susceptibility of the tight-binding model for the honeycomb ladder with the additional vertical hopping. Despite being one-dimensional, the magn…
Orbital paramagnetism without density of states enhancement in nodal-line semimetal ZrSiS
Soshun Ozaki, Hiroyasu Matsuura, Ikuma Tateishi +2
Unconventional orbital paramagnetism without enhanced density of states was recently discovered in the nodal-line semimetal ZrSiS. We propose a novel interband mechanism, linked to…
Disorder-free Sachdev-Ye-Kitaev models: Integrability and a precursor of chaos
Soshun Ozaki, Hosho Katsura
We introduce two disorder-free variants of the Sachdev-Ye-Kitaev (SYK) model, demonstrate their integrability, and study their static and dynamical properties. Unlike diagrammatic…
sparse-ir: optimal compression and sparse sampling of many-body propagators
Markus Wallerberger, Samuel Badr, Shintaro Hoshino +13
We introduce sparse-ir, a collection of libraries to efficiently handle imaginary-time propagators, a central object in finite-temperature quantum many-body calculations. We levera…
Topological contribution to magnetism in the Kane-Mele model: An explicit wave function approach
Soshun Ozaki, Masao Ogata
In our previous publication [S. Ozaki and M. Ogata, Phys. Rev. Research 3, 013058], the quantization of the orbital-Zeeman (OZ) cross term in the magnetic susceptibility, or the cr…
Anomalous Spin Transport Properties of Gapped Dirac Electrons with Tilting
Masao Ogata, Soshun Ozaki, Hiroyasu Matsuura
The anomalous spin transport coefficients of gapped Dirac electrons are studied with application to a quasi-two-dimensional organic conductor -(BETS)I in mind. In the pr…
Nodal-line semimetal HMTSF-TCNQ: Anomalous orbital diamagnetism and charge density wave
S. Ozaki, I. Tateishi, H. Matsuura +2
This study investigates the electronic states and physical quantities of an organic charge-transfer complex HMTSF-TCNQ, which undergoes a charge-density-wave (CDW) phase transition…
Analytic approach to dynamics of the resonant and off-resonant Jaynes-Cummings systems with cavity losses
Soshun Ozaki, Hiromichi Nakazato
A new analytic approach to investigate the zero-temperature time evolution of the Jaynes-Cummings system with cavity losses is developed. With the realistic coupling between the ca…
Universal Quantization of Magnetic Susceptibility Jump at Topological Phase Transition
Soshun Ozaki, Masao Ogata
We examine the magnetic susceptibility of topological insulators microscopically and find that the orbital-Zeeman (OZ) cross term, the cross term between the orbital effect and the…