Theory of unconventional spin density wave: A possible mechanism of the micromagnetism in U-based heavy fermion compounds

被引：139

作者：

Ikeda, H

Ohashi, Y

机构：

[1] Natl Inst Adv Interdisciplinary Res, Joint Res Ctr Atom Technol, Tsukuba, Ibaraki 305, Japan

[2] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 305, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.81.3723

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a novel spin density wave (SDW) state as a possible mechanism of the anomalous anti ferromagnetism, the so called micromagnetism, in URu2Si2 below 17.5 K. In this new SDW, the electron-hole pair amplitude changes its sign in the momentum space as in the case of the unconventional superconductivity. It is shown that this state can be realized in an extended Hubbard model within the mean field theory. We also examine some characteristic properties of this SDW to compare with the experimental results. All these properties well explain the unsolved problem of the micromagnetism. [S0031-9007(98)07466-3].

引用

页码：3723 / 3726

页数：4

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