Talk:Pseudogap

"A pseudogap ... describes an energy range" and "The Pseudogap is a zone of the Phase diagram", so what is it exactly?

Use of "underdoped"

Here: "The pseudogap is a zone of the phase diagram generic to cuprate high-temperature superconductors, existing in underdoped specimens at temperatures above the superconducting transition temperature." Is this effect only present in the underdoped version? Does the phase diagram on the page imply something for an overdoped case?

—Preceding unsigned comment added by 133.1.150.32 (talk) 08:45, 11 May 2011 (UTC)

pseudogap: list of important experiments by year

• Dec 2013 Da Silva Neto et al. Science, Ubiquitous Interplay Between Charge Ordering and High-Temperature Superconductivity in Cuprates

The point: Ubiquitious charge orders in cuprates are sub-leading instabilities within pseudogap phase.

• Dec 2013 Comin et al Science Charge Order Driven by Fermi-Arc Instability in Bi2Sr2−xLaxCuO6+δ

The point: Provides evidence for close relationship between pseudogap temperature $T^*$ and charge order temperature $T_{CO}$.

• Sep 2013 Sakai et al. Phys. Rev. Lett., Raman-Scattering Measurements and Theory of the Energy-Momentum Spectrum for Underdoped Bi2Sr2CaCuO8+δ Superconductors: Evidence of an s-Wave Structure for the Pseudogap

The point: Pseugogap phase have s-wave symmetry and occurs above Fermi level. Hence, It have a different origin than the superconducting phase.

• Jun 2013 Sidis & Bourges arXiv Evidence for Intra-Unit-Cell magnetic order in the pseudo-gap state of high-Tc cuprates

The point An extensive of review of experiment and theory of pseudogap as an intra-unit cell order breaking time-reversal symmetry

• 2011 He et al. Science arXiv From a Single Band Metal to High-Temperature Superconductor via Two Thermal Phase Transitions

The point: An extensive experimental clarification on the defition of $T^{*}$

• 2010 Lawler et al. Nature [ arXiv] Intra-unit-cell electronic nematicity of the high-Tc copper-oxide pseudogap states

The point: Intra-unitcell electronic nematicity correlates with pseudogap phase

Condmatstrel (talk) 05:06, 25 January 2014 (UTC)

pseudogap: list of important theory papers by year

The theory of PG can be categorized into: spin-fluctuation based, charge fluctuation based, and competing orders based theories.

• Dec 2013 Meier et al. arXiv Cascade of phase transitions in the vicinity of a quantum critical point

Model & Method: spin-fermion model

The point: Competing SC + CDW phases give pseudogap.

• Sep 2013 Hayward et al., arXiv Angular fluctuations of a multi-component order describe the pseudogap regime of the cuprate superconductors

Model & Method: Landau theory

The point: SC and CDW order fluctuations cause pseudogap.

• Jul 2013 Davis & Lee PNAS arXiv Concepts relating magnetic interactions, intertwined electronic orders, and strongly correlated superconductivity

Model & Method: Mean field

The point: Fluctuating and intertwined order (AF, SC, CDW) parameters yield pseudogap and strange-metal.

• 2011 Yamaji & Imada PRL arXiv, Composite-Fermion Theory for Pseudogap, Fermi Arc, Hole Pocket, and Non-Fermi Liquid of Underdoped Cuprate Superconductors

The point: A new kind of particle-hole excitations (cofermion exciton), when coupled to regular quasiparticles, yield pseudogap and Fermi arcs.

Model & Method: Hubbard model, slave boson, Green function

• 2006 Kyung et al. PRB arXiv Pseudogap induced by short-range spin correlations in a doped Mott insulator

The point: Short range spin correlations induced by local U lead to pseudogap.

Model & Method: 2D Hubbard Model, CDMFT

• 1997 Castellani et al. arXiv Non-Fermi-liquid behavior and d-wave superconductivity near the charge-density-wave quantum critical point

The point: Near critical charge fluctuations give pseudogap and strang-metal

Model & Method:

Condmatstrel (talk) 04:41, 25 January 2014 (UTC)