Comment on "Theory of Unconventional Spin Density Wave: A Possible Mechanism of the Micromagnetism in U-based Heavy Fermion Compounds"

Abstract

In the recent letter [1] by H. Ikeda and Y. Ohashi, a new, very attractive idea is proposed for the explanation of the micromagnetism in U-based heavy fermion compounds. For this sake a nontrivial spin density wave (d-SDW) is introduced. Our goal is to claim, that in the model considered, the mean-field analysis is incomplete: the ferromagnetic state missed by [1] overcomes d-SDW in a large region of the phase diagram (Fig.1 in [1]).

1 page, accepted for publication in Phys. Rev. Lett