Single reconstructed Fermi surface pocket in an underdoped single-layer cuprate superconductor

M.K. Chan, N. Harrison, R.D. McDonald, B.J. Ramshaw, K.A. Modic, N. Barišić, M. Greven, Nature Communications 7 (2016).

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Journal Article | Published | English
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Abstract
The observation of a reconstructed Fermi surface via quantum oscillations in hole-doped cuprates opened a path towards identifying broken symmetry states in the pseudogap regime. However, such an identification has remained inconclusive due to the multi-frequency quantum oscillation spectra and complications accounting for bilayer effects in most studies. We overcome these impediments with high-resolution measurements on the structurally simpler cuprate HgBa2CuO4+δ (Hg1201), which features one CuO2 plane per primitive unit cell. We find only a single oscillatory component with no signatures of magnetic breakdown tunnelling to additional orbits. Therefore, the Fermi surface comprises a single quasi-two-dimensional pocket. Quantitative modelling of these results indicates that a biaxial charge density wave within each CuO2 plane is responsible for the reconstruction and rules out criss-crossed charge stripes between layers as a viable alternative in Hg1201. Lastly, we determine that the characteristic gap between reconstructed pockets is a significant fraction of the pseudogap energy.
Publishing Year
Date Published
2016-07-22
Journal Title
Nature Communications
Volume
7
Article Number
12244
ISSN
IST-REx-ID

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Chan MK, Harrison N, McDonald RD, et al. Single reconstructed Fermi surface pocket in an underdoped single-layer cuprate superconductor. Nature Communications. 2016;7. doi:10.1038/ncomms12244
Chan, M. K., Harrison, N., McDonald, R. D., Ramshaw, B. J., Modic, K. A., Barišić, N., & Greven, M. (2016). Single reconstructed Fermi surface pocket in an underdoped single-layer cuprate superconductor. Nature Communications, 7. https://doi.org/10.1038/ncomms12244
Chan, M. K., N. Harrison, R. D. McDonald, B. J. Ramshaw, Kimberly A Modic, N. Barišić, and M. Greven. “Single Reconstructed Fermi Surface Pocket in an Underdoped Single-Layer Cuprate Superconductor.” Nature Communications 7 (2016). https://doi.org/10.1038/ncomms12244.
M. K. Chan et al., “Single reconstructed Fermi surface pocket in an underdoped single-layer cuprate superconductor,” Nature Communications, vol. 7, 2016.
Chan MK, Harrison N, McDonald RD, Ramshaw BJ, Modic KA, Barišić N, Greven M. 2016. Single reconstructed Fermi surface pocket in an underdoped single-layer cuprate superconductor. Nature Communications. 7, 12244.
Chan, M. K., et al. “Single Reconstructed Fermi Surface Pocket in an Underdoped Single-Layer Cuprate Superconductor.” Nature Communications, vol. 7, 12244, Springer Nature, 2016, doi:10.1038/ncomms12244.

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