Series-expansion studies of the t-J two-leg ladder

Article

关键词: J MODEL;    2-LEG LADDERS;    PHASE-DIAGRAM;    SPIN LADDER;    ONE-HOLE;    SUPERCONDUCTIVITY;    COMPOUND;    STATES;    LIQUID;    NAV2O5;   

DOI  :  10.1103/PhysRevB.60.16364

来源: SCIE

【 摘 要 】

Series expansions at T=0 are used to study properties of the half-filled t-J ladder doped with one or two holes, and at quarter filling. Dispersion curves are obtained for one-hole symmetric and antisymmetric (bonding and antibonding) excitations and for the two-hole bound state. The line in the phase diagram that separates bound and unbound states is determined. For quarter filling we compute the ground-state energy and estimate the location of the phase separation line. Comparisons with other numerical and analytical results are presented. [S0163-1829(99)06447-4].

【 授权许可】

Free