Collective modes of monolayer, bilayer, and multilayer fermionic dipolar liquid

Details Collective modes of monolayer, bilayer, and multilayer fermionic dipolar liquid Collective modes of monolayer, bilayer, and multilayer fermionic dipolar liquid

2010-09-21

arxiv.org/abs/1009.4204v2

Phys. Rev. B 82, 235126 (2010)

Physics

Condensed Matter

Quantum Gases

11 pages, 7 figures

Scientific paper

10.1103/PhysRevB.82.235126

Motivated by recent experimental advances in creating polar molecular gases in the laboratory, we theoretically investigate the many body effects of two-dimensional dipolar systems with the anisotropic and $1/r^3$ dipole-dipole interactions. We calculate collective modes of 2D dipolar systems, and also consider spatially separated bilayer and multilayer superlattice dipolar systems. We obtain the characteristic features of collective modes in quantum dipolar gases. We quantitatively compare the modes of these dipolar systems with the modes of the extensively studied usual two-dimensional electron systems, where the inter-particle interaction is Coulombic.

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