• DOI:10.1103/PhysRevB.74.115126
• Corpus ID: 119529939

Pomeranchuk and topological Fermi surface instabilities from central interactions

@article{Quintanilla2006PomeranchukAT,
  title={Pomeranchuk and topological Fermi surface instabilities from central interactions},
  author={Jorge Quintanilla and A. J. Schofield},
  journal={Physical Review B},
  year={2006},
  volume={74},
  pages={115126}
}

• J. Quintanilla, A. Schofield
• Published 5 January 2006
• Physics
• Physical Review B

We address at the mean field level the emergence of a Pomeranchuk instability in a uniform Fermi liquid with central particle-particle
interactions. We find that Pomeranchuk instabilities 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 interparticle distance. We
demonstrate this by solving the mean field equations analytically
for an explicit model interaction, as well as numerical results for
more realistic potentials. We find in addition to the Pomeranchuk
instability other, subtler phase transitions in which the Fermi surface
changes topology without rotational symmetry breaking. We argue that
such interaction-driven topological transitions may be as generic
to such systems as the Pomeranchuk instability.