Evidence for a small hole pocket in the Fermi surface of underdoped YBa2Cu3Oy

Abstract

The Fermi surface of a metal is the fundamental basis from which its properties can be understood. In underdoped cuprate superconductors, the Fermi surface undergoes a reconstruction that produces a small electron pocket, but whether there is another, as yet undetected portion to the Fermi surface is unknown. Establishing the complete topology of the Fermi surface is key to identifying the mechanism responsible for its reconstruction. Here we report the discovery of a second Fermi pocket in underdoped YBa2Cu3Oy, detected as a small quantum oscillation frequency in the thermoelectric response and in the c-axis resistance. The field-angle dependence of the frequency demonstrates that it is a distinct Fermi surface and the normal-state thermopower requires it to be a hole pocket. A Fermi surface consisting of one electron pocket and two hole pockets with the measured areas and masses is consistent with a Fermi-surface reconstruction caused by the charge-density-wave order observed in YBa2Cu3Oy, provided other parts of the reconstructed Fermi surface are removed by a separate mechanism, possibly the pseudogap.

arXiv comment23 pages, 5 figures

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Cited by in corpus (43)

• The remarkable underlying ground states of cuprate superconductors
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• Charge Nematicity and Electronic Raman Scattering in Iron-based Superconductors
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• Connecting high-field quantum oscillations to zero-field electron spectral functions in the underdoped cuprates
• Charge ordering in superconducting copper oxides
• Single reconstructed Fermi surface pocket in an underdoped single layer cuprate superconductor
• Sensitivity of $T_{\mathrm{c}}$ to pressure and magnetic field in the cuprate superconductor YBa${}_2$Cu${}_3$O${}_y$: evidence of charge order suppression by pressure
• Extended Kohler${}^{,}$s Rule of Magnetoresistance
• Fermi liquid behavior of the in-plane resistivity in the pseudogap state of YBa_2Cu_4O_8
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• Long-range order and pinning of charge-density waves in competition with superconductivity
• The enigma of the pseudogap phase of the cuprate superconductors
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• Fermi surface reconstruction by a charge-density-wave with finite correlation length
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• Understanding electron-doped cuprate superconductors as hole superconductors
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• Spin-fermion model with overlapping hot spots and charge modulation in cuprates
• Magnetic oscillations measure interlayer coupling in cuprate superconductors
• Doping-dependent competition between superconductivity and polycrystalline charge density waves
• Three energy scales in the superconducting state of hole-doped cuprates detected by electronic Raman scattering
• Charge-Density Waves vs. Superconductivity: Some Results and Future Perspectives
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• Effect of short-range correlations on spectral properties of doped Mott insulators
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• Comment on "Magnetotransport signatures of a single nodal electron pocket constructed from Fermi arcs"
• Comment on "Evidence for a small hole pocket in the Fermi surface of underdoped YBa2Cu3Oy; [arXiv:1409.2788v1]"
• Reply to Comment on "Magnetotransport signatures of a single nodal electron pocket constructed from Fermi arcs"