3 papers
cond-mat.mes-hall2026
Ideal Bands in Tight-Binding Models
Lexu Zhao, Yang Ge, Shinsei Ryu +1
A band is called ideal when its Dirichlet functional saturates the topological lower bound. We study ideal bands in finite-band tight-binding models with conventional two-dimension…
cond-mat.str-el2026
Nematic Wigner crystals in rhombohedral multilayer graphene
Yang Ge, Ashwini Malviya, Ethan Angerhofer +2
Recent experiments have reported evidence for Wigner crystals (WCs) in rhombohedral graphene. Here, we investigate Wigner crystallization in rhombohedral tetralayer graphene using…
cond-mat.str-el2024
Dynamic-RKKY induced time-reversal symmetry breaking and chiral spin liquids
Siqi Shao, Yang Ge, Yashar Komijani
We study the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction in various Kondo lattice systems. We argue that the weak Kondo-coupling expansion contains certain physics which is lo…