100 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Akihisa Koga9 · h 5
- Kazuki Yamamoto2 profiles8 · h 4
- Hiroya Nakao2 profiles7 · h 5
- Masayuki Ohzeki2 profiles6 · h 25
- H. Nishimori5 · h 36
- S. Horiuchi5 · h 38
- Yusuke Nishida2 profiles5 · h 3
- Manaka Okuyama4 · h 5
- Masaki Uchida2 profiles4 · h 5
- Riccardo Muolo4 · h 14
- Shuichi Murakami2 profiles4 · h 4
- A. Nakamura3 · h 3
- The University of TokyoJP65 papers
- Tohoku UniversityJP34 papers
- Kyoto UniversityJP28 papers
- Tokyo Institute of TechnologyJP24 papers
- Osaka Metropolitan UniversityJP20 papers
- High Energy Accelerator Research OrganizationJP19 papers
- Hiroshima UniversityJP19 papers
- Tokyo University of ScienceJP18 papers
- National Astronomical Observatory of JapanJP17 papers
- Rutherford Appleton LaboratoryGB17 papers
- Universidad Autónoma de MadridES17 papers
- University of WarwickGB17 papers
8 papers · 2 filters
Generalized Nagaoka ferromagnetism accompanied by flavor-selective Mott states in an SU() Fermi-Hubbard model
Juntaro Fujii, Kazuki Yamamoto, Akihisa Koga
We study the ferromagnetic instability in an SU() Fermi-Hubbard model on the hypercubic lattice. Combining dynamical mean-field theory with continuous-time quantum Monte Carlo s…
Critical Berezinskii-Kosterlitz-Thouless dynamics in the archetypal two-dimensional spin system BaCuSiOCl
K. M. Ranjith, Maxime Dupont, Steffen Krämer +6
We study the spin dynamics in the quasi-2D spin- dimer compound BaCuSiOCl, which exhibits a magnetic field-induced Bose-Einstein condensate (BEC) of triplons.…
Kondo breakdown induced by non-Hermitian complex hybridization
Kazuki Yamamoto, Masaya Nakagawa, Norio Kawakami
Recently, a non-Hermitian Anderson impurity model with one-body loss has been studied in [Phys. Rev. B 111, 125157 (2025)}], and it has been demonstrated that the renormalization e…
Holographic Aspects of Dynamical Mean-Field Theory
Kouichi Okunishi, Akihisa Koga
Dynamical mean-field theory (DMFT) is one of the most standard theoretical frameworks for addressing strongly correlated electron systems. In this study, we explore a holographic r…
Magneto-cubic and magneto-linear dependence observed in an in-plane anomalous Hall magnet
Ayano Nakamura, Shinichi Nishihaya, Mitsuru Akaki +9
The Hall effect, particularly that arising from in-plane magnetic field, has recently emerged as a sensitive probe of quantum geometric properties in solids. Especially in trigonal…
Reexamination of the charge-ordered dimer pattern in the spinel compound CuIr2S4 using single-crystal synchrotron x-ray diffraction
T. Ohashi, N. Katayama, K. Kojima +11
We have re-investigated the crystal structure of a spinel type CuIr2S4 at low temperatures using a single-crystal in a synchrotron radiation x-ray diffraction experiment. The cryst…
Itinerant ferromagnetism in an SU(3) Fermi-Hubbard model at finite temperatures: A dynamical mean-field theory study
Juntaro Fujii, Kazuki Yamamoto, Akihisa Koga
We investigate an SU(3) Fermi-Hubbard model on a hypercubic lattice at finite temperatures, combining dynamical mean-field theory with continuous-time quantum Monte Carlo simulatio…
Modulated honeycomb lattices and their magnetic properties
Akihisa Koga, Toranosuke Matsubara
We propose a family of modulated honeycomb lattices, a class of quasiperiodic tilings characterized by the metallic mean. These lattices consist of six distinct hexagonal prototile…