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Theory of quantum oscillations in the vortex-liquid state of high-Tc superconductors

Author

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  • Sumilan Banerjee

    (The Ohio State University)

  • Shizhong Zhang

    (The Ohio State University
    Center of Theoretical and Computational Physics, University of Hong Kong)

  • Mohit Randeria

    (The Ohio State University)

Abstract

The observation of quantum oscillations in underdoped cuprates has generated intense debate about the nature of the field-induced resistive state and its implications for the ‘normal state’ of high-Tc superconductors. Quantum oscillations suggest an underlying Fermi liquid at high magnetic fields H and low temperatures, in contrast with the pseudogap seen in zero-field, high-temperature spectroscopic experiments. Recent specific heat measurements show quantum oscillations in addition to a large field-dependent suppression of the electronic density of states. Here we present a theoretical analysis that reconciles these seemingly contradictory observations. We model the resistive state as a vortex liquid with short-range d-wave pairing correlations. We show that this state exhibits quantum oscillations, with a period determined by a Fermi surface reconstructed by a competing order parameter, in addition to a large suppression of the density of states that goes like √H at low fields.

Suggested Citation

  • Sumilan Banerjee & Shizhong Zhang & Mohit Randeria, 2013. "Theory of quantum oscillations in the vortex-liquid state of high-Tc superconductors," Nature Communications, Nature, vol. 4(1), pages 1-7, June.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2667
    DOI: 10.1038/ncomms2667
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