d-Wave Spin Density Wave phase in the Attractive Hubbard Model with Spin Polarization

Details d-Wave Spin Density Wave phase in the Attractive Hubbard Model with Spin Polarization d-Wave Spin Density Wave phase in the Attractive Hubbard Model with Spin Polarization

2009-03-09

arxiv.org/abs/0903.1491v1

Physics

Condensed Matter

Materials Science

Scientific paper

We investigate the possibility of unconventional spin density wave (SDW) in the attractive Hubbard model with finite spin polarization. We show that pairing and density fluctuations induce the transverse d-wave SDW near the half-filling. This novel SDW is related to the d-wave superfluidity induced by antiferromagnetic spin fluctuations, in the sense that they are connected with each other through Shiba's attraction-repulsion transformation. Our results predict the d-wave SDW in real systems, such as cold Fermi atom gases with population imbalance and compounds involving valence skipper elements.

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