Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-10-12
Phys. Rev. B 75, 115103 (2007)
Physics
Condensed Matter
Strongly Correlated Electrons
26 pages, 14 figures
Scientific paper
10.1103/PhysRevB.75.115103
We study the Fermi surface instabilities of the Pomeranchuk type in the spin triplet channel with high orbital partial waves ($F_{l}^a ~(l>0)$). The ordered phases are classified into two classes, dubbed the $\alpha$ and $\beta$-phases by analogy to the superfluid $^3$He-A and B-phases. The Fermi surfaces in the $\alpha$-phases exhibit spontaneous anisotropic distortions, while those in the $\beta$-phases remain circular or spherical with topologically non-trivial spin configurations in momentum space. In the $\alpha$-phase, the Goldstone modes in the density channel exhibit anisotropic overdamping. The Goldstone modes in the spin channel have nearly isotropic underdamped dispersion relation at small propagating wavevectors. Due to the coupling to the Goldstone modes, the spin wave spectrum develops resonance peaks in both the $\alpha$ and $\beta$-phases, which can be detected in inelastic neutron scattering experiments. In the p-wave channel $\beta$-phase, a chiral ground state inhomogeneity is spontaneously generated due to a Lifshitz-like instability in the originally nonchiral systems. Possible experiments to detect these phases are discussed.
Fradkin Eduardo
Sun Kai
Wu Congjun
Zhang Shou-Cheng
No associations
LandOfFree
Fermi liquid instabilities in the spin channel does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Fermi liquid instabilities in the spin channel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fermi liquid instabilities in the spin channel will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-442647