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Georg Bruun

Density Waves in Layered Systems with Fermionic Polarmolecules

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  • Institut for Fysik og Astronomi
A layered system of two-dimensional planes containing fermionic polar molecules can potentially realize a number of exotic quantum many-body states. Among the predictions, are density-wave instabilities driven by the anisotropic part of the dipole-dipole interaction in a single layer. However, in typical multilayer setups it is reasonable to expect that the onset and properties of a density-wave are modified by adjacent layers. Here we show that this is indeed the case. For multiple layers the critical strength for the density-wave instability decreases with the number of layers. The effect depends on density and is more pronounced in the low density regime. The lowest solution of the instability corresponds to the density waves in the different layers being in-phase, whereas higher solutions have one or several adjacent layers that are out of phase. The parameter regime needed to explore this instability is within reach of current experiments.
OriginalsprogEngelsk
TidsskriftThe European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics
Vol/bind65
Nummer1-2
Sider (fra-til)133-139
ISSN1434-6060
DOI
StatusUdgivet - 2011

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