Theory of hybrid state in a metal with a small Fermi surface and strong collective excitations

2004/09/30 by F. H. L. Essler, Fabian H. L. Eßler, A. M. Tsvelik · 1 citation
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.71.195116

published as Phys. Rev. B71, 195116 (2005). · 12 pages, 7 figures

arxiv created 2005/01/19 · openalex publication_date 2005/05/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We develop a theory of a hybrid state, where quasiparticles coexist with strong collective modes, taking as a starting point a model of infinitely many one-dimensional Mott insulators weakly coupled by interchain tunneling. This state exists at an intermediate temperature range and undergoes an antiferromagnetic phase transition at temperatures much smaller than the Mott-Hubbard gap. The most peculiar feature of the hybrid state is that its Fermi surface volume is unrelated to the electron density. We present a self-consistent derivation of the low-energy effective action for our model.

Citations

• Finite-temperature dynamical magnetic susceptibility of quasi-one-dimensional frustrated spin-12Heisenberg antiferromagnets
• Weakly coupled one-dimensional Mott insulators
• Form factors of soliton-creating operators in the sine-Gordon model
• Fractionalized Fermi Liquids
• Destruction of the Fermi surface in underdoped high-Tc superconductors
• Weak magnetism and non-Fermi liquids near heavy-fermion critical points

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• Field theory for a fermionic ladder with generic intrachain interactions