Chemical potential oscillations from a single nodal pocket in the underdoped high-Tc superconductor YBa2Cu3O6+x

Abstract

The mystery of the normal state in the underdoped cuprates has deepened with the use of newer and complementary experimental probes. While photoemission studies have revealed solely `Fermi arcs' centered on nodal points in the Brillouin zone at which holes aggregate upon doping, more recent quantum oscillation experiments have been interpreted in terms of an ambipolar Fermi surface, that includes sections containing electron carriers located at the antinodal region. To address the question of whether an ambipolar Fermi surface truly exists, here we utilize measurements of the second harmonic quantum oscillations, which reveal that the amplitude of these oscillations arises mainly from oscillations in the chemical potential, providing crucial information on the nature of the Fermi surface in underdoped YBa2Cu3O6+x. In particular, the detailed relationship between the second harmonic amplitude and the fundamental amplitude of the quantum oscillations leads us to the conclusion that there exists only a single underlying quasi-two dimensional Fermi surface pocket giving rise to the multiple frequency components observed via the effects of warping, bilayer splitting and magnetic breakdown. A range of studies suggest that the pocket is most likely associated with states near the nodal region of the Brillouin zone of underdoped YBa2Cu3O6+x at high magnetic fields.

7 pages, 4 figures

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Cited by in corpus (20)

• Charge ordering in the electron-doped superconductor Nd2-xCexCuO4
• Towards resolution of the Fermi surface in underdoped high-Tc superconductors
• Ideal charge density wave order in the high-field state of superconducting YBCO
• Quantum Oscillations in Hole-Doped Cuprates
• Normal-state nodal electronic structure in underdoped high-Tc copper oxides
• Quantum oscillations from nodal bilayer magnetic breakdown in the underdoped high temperature superconductor YBa2Cu3O6+x
• Single reconstructed Fermi surface pocket in an underdoped single layer cuprate superconductor
• Fermi surface reconstruction from bilayer charge ordering in the underdoped high temperature superconductor YBa2Cu3O6+x
• Fermi Surface Reconstruction and Quantum Oscillations in Underdoped YBa${}_2$Cu${}_3$O${}_{7-x}$ Modeled in a Single Bilayer with Mirror Symmetry Broken by Charge Density Waves
• Chemical potential oscillations from a single nodal pocket in the underdoped high-Tc superconductor YBa2Cu3O6+x
• Composite Operator Method analysis of the underdoped cuprates puzzle
• The Hubbard model beyond the two-pole approximation: a Composite Operator Method study
• Bulk Rotational Symmetry Breaking in Kondo Insulator SmB6
• Near doping-independent pocket area from an antinodal Fermi surface instability in underdoped high temperature superconductors
• Quantum Oscillation as Diagnostics of Pseudogap State in Underdoped Cuprates
• Quantum oscillations in the hole-doped cuprates and the confinement of spinons
• Gutzwiller Charge Phase Diagram of Cuprates, including Electron-Phonon Coupling Effects
• Quantum oscillations in non-Fermi liquids: Implications for high-temperature superconductors
• COM(3p) solution of the 2D Hubbard model: momentum resolved quantities
• Underdoped cuprates, manifestations of boson-fermion crossover, `quantum oscillations' and the robust fractional quantum Hall state nu = 2/5