Lattice dependence of saturated ferromagnetism in the Hubbard model

Article

关键词: SINGLE SPIN-FLIP;    NAGAOKA STATE;    SQUARE LATTICE;    GROUND-STATES;    LINE GRAPHS;    INSTABILITY;    STABILITY;    D=INFINITY;    PARTICLE;    FERMIONS;   

DOI  :  10.1103/PhysRevB.56.13960

来源: SCIE

【 摘 要 】

We investigate the instability of the saturated ferromagnetic ground state (Nagaoka state) in the Hubbard model on various lattices in dimensions d=2 and d=3. A variational resolvent approach is developed for the Nagaoka instability both for U=infinity and for U

【 授权许可】

Free