Fermi Liquid instabilities in two-dimensional lattice models

Authors :: Lamas, C. A.
Cabra, D. C.
Grandi, N.
Source :: Phys. Rev. B 78, 115104 (2008) (8 pages)
Publication Year :: 2008
Abstract: We develop a procedure for detecting Fermi liquid instabilities by extending the analysis of Pomeranchuk to two-dimensional lattice systems. The method is very general and straightforward to apply, thus providing a powerful tool for the search of exotic phases. We test it by applying it to a lattice electron model with interactions leading to $s$ and d-wave instabilities.<br />Comment: 8 pages, 3 figures