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.
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U2 - 10.1103/PhysRevLett.81.3723
DO - 10.1103/PhysRevLett.81.3723
M3 - Article
AN - SCOPUS:0000622771
SN - 0031-9007
VL - 81
SP - 3723
EP - 3726
JO - Physical Review Letters
JF - Physical Review Letters
IS - 17
ER -