Pseudogap and Competing States in Underdoped Cuprates

Abstract

I shall argue that the high Tc problem is the problem of doping into a Mott insulator. Furthermore, the well documented pseudo-gap phenomenon in underdoped cuprates holds the key to understanding this physics. Phase fluctuation alone cannot explain this phenomenon, but there is a clear need to identify a competing state which lives in the vortex core. The staggered flux state is a good candidate for the competing state and experimental tests of these ideas will be discussed.

6 Pages; 3 Figures Proceedings of M2R-RIO Conference, Rio de Janiero, Brazil, 2003 To appear in Physica C

References in corpus (3)

• Order and quantum phase transitions in the cuprate superconductors
• Antiferromagnetic Vortex Core of Tl_2Ba_2CuO_{6+x} Studied by Nuclear Magnetic Resonance
• Staggered-flux normal state in the weakly doped t-J model

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• The pseudogap: friend or foe of high Tc?
• Lattice symmetry breaking in cuprate superconductors: Stripes, nematics, and superconductivity
• Evidence for unusual superconducting correlations coexisting with stripe order in La(1.875)Ba(0.125)CuO(4)
• Cuprate superconductors as viewed through a striped lens
• Superconducting d-wave stripes in cuprates: Valence bond order coexisting with nodal quasiparticles
• Evidence for decay of spin-waves above the pseudogap in underdoped YBa2Cu3O6.35
• Itinerancy and Hidden Order in $UR{u}_{2}S{i}_2$
• Orbital currents and charge density waves in a generalized Hubbard ladder
• Hole correlation and antiferromagnetic order in the t-J model
• Quantum fluctuations, pseudogap, and the T=0 superfluid density in strongly correlated d-wave superconductors
• Magneto-thermal evidence of a partial gap at the Fermi surface of UPt_2Si_2
• Opening of a pseudogap in a quasi-two dimensional superconductor due to critical thermal fluctuations
• SU(2) approach to the pseudogap phase of high-temperature superconductors: electronic spectral functions