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

Hiroaki Ikeda, Yoji Ohashi

Research output: Contribution to journalArticlepeer-review

135 Citations (Scopus)

Abstract

We propose a novel spin density wave (SDW) state as a possible mechanism of the anomalous antiferromagnetism, 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.

Original languageEnglish
Pages (from-to)3723-3726
Number of pages4
JournalPhysical review letters
Volume81
Issue number17
DOIs
Publication statusPublished - 1998 Oct 26

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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