Itinerant ferromagnetism in a two-dimensional atomic gas

Details Itinerant ferromagnetism in a two-dimensional atomic gas Itinerant ferromagnetism in a two-dimensional atomic gas

2010-09-19

arxiv.org/abs/1009.3614v1

Physics

Condensed Matter

Quantum Gases

Accepted for publication in Phys. Rev. A

Scientific paper

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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