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Persistent URL http://purl.org/net/epubs/work/34633
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Record Id 34633
Title Pomeranchuk and topological Fermi surface instabilities from central interactions
Abstract We address, at the mean field (MF) level, the emergence of a Pomeranchuk instability (PI) in a uniform Fermi liquid with \emph{central} particle-particle interactions. We find that a PI with all symmetries, except $l=1,$ can take place if the interaction is repulsive and has a finite range $r_{0}$ of the order of the inter-particle distance. We demonstrate this by solving the MF equations analytically for a simple model interaction. We find, in addition to the PI, other, subtler phase transitions in which the Fermi surface changes topology without rotational symmetry-breaking. We argue that such ``interaction-driven Lifshitz transitions'' may be as generic to such systems as the PI.
Keywords ISIS 2006 , Physics
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Journal Article Phys Rev B 74 (2006): 115126. doi:10.1103/PhysRevB.74.115126 2006