Electronic spectra with paramagnon fractionalization in the single-band Hubbard model

Journal Article · 25 February 2022 · Physical Review. B

DOI: https://doi.org/10.1103/physrevb.105.075146 · OSTI ID:1867823

Mascot, Eric  ^[1]; Nikolaenko, Alexander  ^[2]; Tikhanovskaya, Maria  ^[2]; Zhang, Ya-Hui ^[2]; Morr, Dirk K. ^[3]; Sachdev, Subir  ^[4]

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1. Univ. of Illinois, Chicago, IL (United States); University of Ilinois at Chicago
2. Harvard Univ., Cambridge, MA (United States)
3. Univ. of Illinois, Chicago, IL (United States)
4. Harvard Univ., Cambridge, MA (United States); Inst. for Advanced Study, Princeton, NJ (United States)

We examine 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, whereas the second hidden layer of spins forms a spin liquid with fractionalized spinon excitations. Here, we compute the imaginary part of the electronic self-energy induced by the spinon excitations.

• Research Organization: Univ. of Illinois, Chicago, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES); U.S. National Science Foundation; Simons Foundation
• Grant/Contract Number: FG02-05ER46225; SC0019030
• OSTI ID: 1867823
• Journal Information: Physical Review. B, Journal Name: Physical Review. B Journal Issue: 7 Vol. 105; ISSN 2469-9950
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English