Chemical potential oscillations from nodal Fermi surface pocket in the underdoped high-temperature superconductor YBa2Cu3O6+x
نویسندگان
چکیده
منابع مشابه
Quantum oscillations and Fermi surface in an underdoped high temperature superconductor
Despite twenty years of research, the phase diagram of high-temperature superconductors remains enigmatic 1 , 2. A central question is: what makes the physical properties of these copper oxides so dramatically different on opposite sides of the superconducting region? In the overdoped regime, the material behaves as a reasonably conventional metal, with a large Fermi surface 3 , 4. The underdop...
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Fermi surface models applied to the underdoped cuprates predict the small pocket area to be strongly dependent on doping whereas quantum oscillations in YBa(2)Cu(3)O(6+x) find precisely the opposite to be true--seemingly at odds with the Luttinger volume. We show that such behavior can be explained by an incommensurate antinodal Fermi surface nesting-type instability--further explaining the dop...
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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...
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Motivated by recent quantum oscillation observations in the underdoped high-temperature superconductors, the effect of the short-range antiferromagnetic correlations on the electronic properties of the short-ranged d-density wave state is investigated. At intermediate d-density wave correlations, the cross section of the energy dispersion at the Fermi energy consists of hole pockets and an elec...
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The coexistence of π-flux state and d-wave RVB state is considered in this paper within the slave boson approach. A critical value of doping concentration δc is found, below which the coexisting π-flux and d-wave RVB state is favored in energy. The pseudo Fermi surface of spinons and the physical electron spectral function are calculated. A clear Fermi-level crossing is found along the (0,0) to...
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ژورنال
عنوان ژورنال: Nature Communications
سال: 2011
ISSN: 2041-1723
DOI: 10.1038/ncomms1468