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Electronic spectra with paramagnon fractionalization in the single band Hubbard model

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arxiv 2111.13703 v3 pith:6GBOHM2K submitted 2021-11-26 cond-mat.str-el

Eric Mascot , Alexander Nikolaenko , Maria Tikhanovskaya , Ya-Hui Zhang , Dirk K. Morr , Subir Sachdev This is my paper · ORCID
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We examine the spectral properties of a recently proposed theory of the intermediate temperature pseudogap metal phase of the cuprates. We show that this theory can be obtained from the familiar paramagnon theory of nearly antiferromagnetic metals by fractionalizing the paramagnon into two `hidden' layers of S=1/2 spins. The first hidden layer of spins hybridizes with the electrons as in a Kondo lattice heavy Fermi liquid, while the second hidden layer of spins forms a spin liquid with fractionalized spinon excitations. We compute the imaginary part of the electronic self energy induced by the spinon excitations. The energy and momentum dependence of the photoemission spectrum across the Brillouin zone provides a good match to observations by He et al. in Bi2201 (Science 331, 1579 (2011)) and by Chen et al. in Bi2212 (Science 366, 1099 (2019)).

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Yamaji effect in models of underdoped cuprates

    cond-mat.str-el 2025-10 conditional novelty 6.0 of 10

    FL* theory (p/8 pockets) reproduces the observed Yamaji ADMR in HgBa2CuO4+δ, while even the best-case SDW theory (Q=(π,π,0), p/4 pockets) predicts an extra, unobserved Yamaji peak at φ=45°.

  2. Thermopower across Fermi-volume-changing quantum phase transitions without translational symmetry breaking

    cond-mat.str-el 2024-12 conditional novelty 6.0 of 10

    A large-N model of a Fermi-volume-changing transition without symmetry breaking predicts a skewed marginal Fermi liquid with large asymmetric thermopower, matching CeRhIn5 and Nd-LSCO data.

  3. Lectures on insulating and conducting quantum spin liquids

    cond-mat.str-el 2025-12 unverdicted novelty 3.0 of 10

    The notes argue that the FL* state — small pockets plus a quantized spin-liquid anomaly — resolves the ADMR pocket and v_F >> v_Delta problems that defeated holon-metal and plain fermionic-parton theories of the cuprates.

  4. The foot, the fan, and the cuprate phase diagram: Fermi-volume-changing quantum phase transitions

    cond-mat.str-el 2025-01 conditional novelty 3.0 of 10

    The paper attributes the cuprate 'foot' to a disordered spin-density-wave transition and the 'fan' to a disorder-tuned FL-to-FL* Fermi-volume-changing transition described by a two-dimensional Yukawa-SYK model.

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