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Publications in Scientific Journals:

M. Chan, N. Harrison, R. Mcdonald, B. Ramshaw, K. Modic, N. Barisić, M. Greven:
"Single reconstructed Fermi surface pocket in an underdoped single-layer cuprate superconductor";
Nature Communications, 7 (2016), 12244; 1 - 9.



English 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 HgBa2CuO4þd (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-twodimensional 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 crisscrossed 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.


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1038/ncomms12244


Created from the Publication Database of the Vienna University of Technology.