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Publication - Professor Nigel Hussey

    Quantum oscillations and Fermi surface of high temperature cuprate superconductors

    Citation

    Vignolle, B, Vignolles, D, LeBoeuf, D, Lepault, S, Ramshaw, B, Liang, R, Bonn, D, Hardy, W, Doiron-Leyraud, N, Carrington, A, Hussey, N, Taillefer, L & Proust, C, 2011, ‘Quantum oscillations and Fermi surface of high temperature cuprate superconductors’. Comptes Rendus Physique, vol 12., pp. 446 - 460

    Abstract

    Over 20 years since the discovery of high temperature superconductivity in cuprates
    (Bednorz and Müller, 1986 [1]), the first convincing observation of quantum oscillations
    in underdoped YBa2Cu3O6.5 (Doiron-Leyraud et al., 2007 [2]) has deeply changed the
    theoretical landscape relevant to these materials. The Fermi surface is a basic concept
    of solid state physics, which underpins most physical properties (electrical, thermal,
    optical, etc.) of a metal. Even in the presence of interactions, this fundamental concept
    remains robust. While there was little doubt about the existence of a Fermi surface on
    the overdoped side of the phase diagram of the cuprates, the discovery of quantum
    oscillations in the underdoped regime was a surprise. The small pockets inferred from the
    measurements in underdoped YBa2Cu3Oy contrast with the large orbit found in overdoped
    Tl2Ba2CuO6+δ . A central issue in understanding the phase diagram of high temperature
    superconductors is the origin of this difference at opposite sides of the superconducting
    dome. This review aims to shed light on this issue by bringing together recent results of
    quantum oscillation and transport measurements under high magnetic fields in hole-doped
    cuprates.

    Full details in the University publications repository