ITINERANT ANTIFERROMAGNETISM IN AN INFINITE LINEAR CHAIN

被引：65

作者：

JOHANSSON, B

BERGGREN, KF

机构：

[1] FOA, Fack, Stockholm

来源：

PHYSICAL REVIEW | 1969年 / 181卷 / 02期

关键词：

D O I：

10.1103/PhysRev.181.855

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Overhauser's spin-density-wave state of a general pitch Q is considered for a linear chain with a half-filled band. It is found that Q=2kF for all values of the coupling constant. Comparison is made with other Hartree-Fock states, and with a recent exact expression for the ground-state energy. The collective modes of the system are calculated numerically, and for large coupling constant they are found to behave as (q)|sin(qa)|. © 1969 The American Physical Society.

引用

页码：855 / +

页数：1

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