SPIN-PEIERLS TRANSITIONS IN S-GREATER-THAN-1/2 HEISENBERG-CHAINS

被引：48

作者：

GUO, DD ^{[1
]}

KENNEDY, T ^{[1
]}

MAZUMDAR, S ^{[1
]}

机构：

[1] UNIV ARIZONA,DEPT MATH,TUCSON,AZ 85721

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.41.9592

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Exact diagonalizations are done to calculate the energy gain from bond alternation in finite spin chains as a function of chain length. Calculations are done for S=1/2, 1, 3/2, and 2. Qualitative differences are found between half-integer and interger spins. Our results (i) indicate the absence of the spin-Peierls transition in systems with integer spins and (ii) suggest a transition in systems with half-integer spins. © 1990 The American Physical Society.

引用

页码：9592 / 9595

页数：4

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