Ferronematic ground state of the dilute dipolar Fermi gas

It is shown that a homogeneous two-component Fermi gas with (long-range) dipolar and short-range isotropic interactions has a ferronematic phase for suitable values of the dipolar and short-range coupling constants. The ferronematic phase is characterized by having a nonzero magnetization and long-r...

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Bibliographic Details
Published in:Physical review letters 2009-11, Vol.103 (20), p.205301-205301, Article 205301
Main Authors: Fregoso, Benjamin M, Fradkin, Eduardo
Format: Article
Language:English
Subjects:
ANGULAR MOMENTUM
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
COUPLING CONSTANTS
ENERGY LEVELS
FERMI GAS
FERMI LEVEL
GROUND STATES
MAGNETIZATION
PARTICLE PROPERTIES
SPIN
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Summary:It is shown that a homogeneous two-component Fermi gas with (long-range) dipolar and short-range isotropic interactions has a ferronematic phase for suitable values of the dipolar and short-range coupling constants. The ferronematic phase is characterized by having a nonzero magnetization and long-range orientational uniaxial order. The Fermi surface of the spin-up (-down) component is elongated (compressed) along the direction of the magnetization.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.103.205301