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 journalArticle

133 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
Publication statusPublished - 1998 Oct 26
Externally publishedYes

Fingerprint

fermions
antiferromagnetism
superconductivity
momentum

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Theory of unconventional spin density wave : A possible mechanism of the micromagnetism in U-based heavy fermion compounds. / Ikeda, Hiroaki; Ohashi, Yoji.

In: Physical Review Letters, Vol. 81, No. 17, 26.10.1998, p. 3723-3726.

Research output: Contribution to journalArticle

@article{ba1e167c36d14575af2555ee567c7c4c,
title = "Theory of unconventional spin density wave: A possible mechanism of the micromagnetism in U-based heavy fermion compounds",
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.",
author = "Hiroaki Ikeda and Yoji Ohashi",
year = "1998",
month = "10",
day = "26",
language = "English",
volume = "81",
pages = "3723--3726",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "17",

}

TY - JOUR

T1 - Theory of unconventional spin density wave

T2 - A possible mechanism of the micromagnetism in U-based heavy fermion compounds

AU - Ikeda, Hiroaki

AU - Ohashi, Yoji

PY - 1998/10/26

Y1 - 1998/10/26

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0000622771&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000622771&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0000622771

VL - 81

SP - 3723

EP - 3726

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 17

ER -