3 papers
cond-mat.str-el2025
Spin bond order driven by extended repulsive interactions in doped graphene
Jin-Ju Ri, Song-Jin O, Chol-Su O
We use the truncated-unity functional renormalization group (TUFRG) to study many-body instabilities of correlated electrons in graphene doped near the van Hove singularity (VHS).…
cond-mat.str-el2023
Consistent combination of truncated-unity functional renormalization group and mean-field theory
Song-Jin O
We propose a novel scheme for combining efficiently the truncated-unity functional renormalization group (TUFRG) and the mean-field theory. It follows a method of Wang, Eberlein an…
cond-mat.str-el2020
Competing electronic orders on a heavily doped honeycomb lattice with enhanced exchange coupling
Song-Jin O, Yong-Hwan Kim, Ok-Gyong Pak +3
Motivated by recent discovery of correlated insulating and superconducting behavior in twisted bilayer graphene, we revisit graphene's honeycomb lattice doped close to the van Hove…