Stable non-Fermi liquid phase of itinerant spin-orbit coupled ferromagnets
arXiv:1408.6826 · doi:10.1103/PhysRevB.92.035131
Abstract
Direct coupling between gapless bosons and a Fermi surface results in the destruction of Landau quasiparticles and a breakdown of Fermi liquid theory. Such a non-Fermi liquid phase arises in spin-orbit coupled ferromagnets with spontaneously broken continuous symmetries due to strong coupling between rotational Goldstone modes and itinerant electrons. These systems provide an experimentally accessible context for studying non-Fermi liquid physics. Possible examples include low-density Rashba coupled electron gases, which have a natural tendency towards spontaneous ferromagnetism, or topological insulator surface states with proximity-induced ferromagnetism. Crucially, unlike the related case of a spontaneous nematic distortion of the Fermi surface, for which the non-Fermi liquid regime is expected to be masked by a superconducting dome, we show that the non-Fermi liquid phase in spin-orbit coupled ferromagnets is stable.
14 pages; typos fixed and transport/disorder sections revised
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Cited by in corpus (12)
- Counting Rules of Nambu-Goldstone Modes
- Criterion for stability of Goldstone Modes and Fermi Liquid behavior in a metal with broken symmetry
- Amperean Pairing at the Surface of Topological Insulators
- Non-Fermi Liquids from Dipolar Symmetry Breaking
- Partial filled Landau Level at even denominator, a vortex metal with Berry phase
- Rashba scattering in the low-energy limit
- Universality of low-energy Rashba scattering
- Nematic order on the surface of a three-dimensional topological insulator
- Fractal non-Fermi liquids from moiré-Hofstadter phonons
- Fermi surface instabilities of symmetry-breaking and topological types on the surface of a three-dimensional topological insulator
- Non-Fermi Liquids from Subsystem Symmetry Breaking in van der Waals Multilayers
- Surface topological quantum criticality: Conformal manifolds and Discrete Strong Coupling Fixed Points