Connecting high-field quantum oscillations to zero-field electron spectral functions in the underdoped cuprates

Andrea Allais, Debanjan Chowdhury () and Subir Sachdev
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Andrea Allais: Harvard University
Debanjan Chowdhury: Harvard University
Subir Sachdev: Perimeter Institute for Theoretical Physics

Nature Communications, 2014, vol. 5, issue 1, 1-10

Abstract: Abstract The nature of the pseudogap regime of cuprate superconductors at low hole density remains unresolved. It has a number of seemingly distinct experimental signatures: a suppression of the paramagnetic spin susceptibility at high temperatures, low-energy electronic excitations that extend over arcs in the Brillouin zone, X-ray detection of charge-density wave order at intermediate temperatures and quantum oscillations at high magnetic fields and low temperatures. Here we show that a model of competing charge-density wave and superconducting orders provides a unified description of the intermediate and low-temperature regimes. We treat quantum oscillations at high field beyond semiclassical approximations, and find clear and robust signatures of an electron pocket compatible with existing observations; we also predict oscillations due to additional hole pockets. In the zero-field and intermediate temperature regime, we compute the electronic spectrum in the presence of thermally fluctuating charge-density and superconducting orders. Our results are compatible with experimental trends.

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6771

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DOI: 10.1038/ncomms6771

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