3 papers
cond-mat.str-el2026
Quantum geometry and RKKY in flat bands
Chang-geun Oh, Makoto Shimizu, Youichi Yanase +1
Flat conduction bands quench the group velocity and thus challenge conventional, dispersion-driven pictures of the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction, where localized…
cond-mat.str-el2026
Magnetic fluctuations driven by quantum geometry
Makoto Shimizu, Chang-guen Oh, Youichi Yanase
Using quantum distance, magnetic susceptibility in the non-interacting limit can be rigorously split into two contributions: one arising solely from band dispersion, while the othe…
cond-mat.str-el2025
Multilayer Crystal Field states from locally broken centrosymmetry
Owen Moulding, Makoto Shimizu, Amit Pawbake +9
Local charge, spin, or orbital degrees of freedom with intersite interactions are oftentimes sufficient to construct most quantum orders. This is conventionally true for f-electron…