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Itinerant ferromagnetism in a two-dimensional atomic gas (1009.3614v1)
Published 19 Sep 2010 in cond-mat.quant-gas, cond-mat.other, and cond-mat.str-el
Abstract: Motivated by the first experimental evidence of ferromagnetic behavior in a three-dimensional ultracold atomic gas, we explore the possibility of itinerant ferromagnetism in a trapped two-dimensional atomic gas. Firstly, we develop a formalism that demonstrates how quantum fluctuations drive the ferromagnetic reconstruction first order, and consider the consequences of an imposed population imbalance. Secondly, we adapt this formalism to elucidate the key experimental signatures of ferromagnetism in a realistic trapped geometry.
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