HOLE-HOLE CONTACT INTERACTION IN THE T-J MODEL

Article

关键词: HEISENBERG-ANTIFERROMAGNET;    QUANTUM ANTIFERROMAGNET;    EXACT-DIAGONALIZATION;    SQUARE LATTICE;    SUPERCONDUCTIVITY;    SYSTEMS;    MOTION;    EXCITATIONS;    VACANCIES;    DYNAMICS;   

DOI  :  10.1103/PhysRevB.49.6197

来源: SCIE

【 摘 要 】

Using a variational approach we calculate the hole-hole contact interaction on the quantum Neel background. Explicit analytical expressions for the vertex function of the interaction are obtained. Solution of the Bethe-Salpeter equation with this interaction gives bound states in d and p waves with binding energies close to those obtained recently by numerical methods. At t/J greater-than-or-equal-to 2-3 the bound state disappears.

【 授权许可】

Free