HOLE-HOLE CONTACT INTERACTION IN THE T-J MODEL

被引：22
|
作者：
CHERNYSHEV, AL
DOTSENKO, AV
SUSHKOV, OP
机构：
[1] BUDKER INST NUCL PHYS, NOVOSIBIRSK 630090, RUSSIA
[2] UNIV NEW S WALES, SCH PHYS, KENSINGTON, NSW 2033, AUSTRALIA
来源：
PHYSICAL REVIEW B | 1994年 / 49卷 / 09期
关键词：
D O I：
10.1103/PhysRevB.49.6197
中图分类号：
T [工业技术];
学科分类号：
08 ;
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.
引用
收藏
页码：6197 / 6204
页数：8
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