Spin correlations in the algebraic spin liquid: Implications for high-Tcsuperconductors

2002/01/28 by Walter Rantner, Xiao-Gang Wen · 14 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.66.144501

22 pages, 18 figures, submitted to PRB

arxiv created 2002/01/28 · openalex publication_date 2002/10/09 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We propose that underdoped high-T_c superconductors are described by an algebraic spin liquid (ASL) at high energies, which undergoes a spin-charge recombination transition at low energies. The spin correlation in the ASL is calculated via its effective theory---a system of massless Dirac fermions coupled to a U(1) gauge field. We find that without fine-tuning any parameters the gauge interaction strongly enhances the staggered spin correlation even in the presence of a large single-particle pseudogap. This allows us to show that the ASL plus spin-charge recombination picture can explain many highly unusual properties of underdoped high-T_c superconductors.

Citations

• Theory of Underdoped Cuprates

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