Origin of the pseudogap and its influence on superconducting state

Abstract

When holes move in the background of strong antiferromagnetic correlation, two effects with different spatial scale emerge, leading to a much reduced hopping integral with an additional phase factor. An effective Hamiltonian is then proposed to investigate the underdoped cuprates. We argue that the pseudogap is the consequence of dressed hole moving in the antiferromagnetic background and has nothing to do with the superconductivity. The momentum distributions of the gap are qualitatively consistent with the recent ARPES measurements both in the pseudogap and superconducting state. Two thermal qualities are further calculated to justify our model. A two-gap scenario is concluded to describe the relation between the two gaps.

7 pages, 5 figures

References in corpus (23)

• Scanning tunneling spectroscopy of high-temperature superconductors
• Magnetic order in the pseudogap phase of high-$T_C$ superconductors
• Distinct Fermi-Momentum Dependent Energy Gaps in Deeply Underdoped Bi2212
• A Phenomenological Theory of The Pseudogap State
• From a single-band metal to a high-temperature superconductor via two thermal phase transitions (Supporting Material)
• Two Energy Scales and two Quasiparticle Dynamics in the Superconducting State of Underdoped Cuprates
• From a single-band metal to a high-temperature superconductor via two thermal phase transitions
• The Ground State of the Pseudogap in Cuprate Superconductors
• Quantum critical behaviour in the superfluid density of strongly underdoped ultrathin cuprate films
• Asymmetry of the electronic states in hole- and electron-doped cuprates: Exact diagonalization study of the t-t'-t''-J model
• Doped high-Tc cuprate superconductors elucidated in the light of zeros and poles of electronic Green's function
• Coexistence of competing orders with two energy gaps in real and momentum space in high-Tc superconductor Bi2Sr2-xLaxCuO6+delta
• Competition between spin density wave order and superconductivity in the underdoped cuprates
• Imaging nanoscale Fermi surface variations in an inhomogeneous superconductor
• The emergence of coherent magnetic excitations in the pseudogap phase of La2-xSrxCuO4
• Superconducting coherence peak in the electronic excitations of a single layer cuprate superconductor $B{i}_{2}S{r}_{1.6}L{a}_{0.4}Cu{O}_{6+\delta }$
• Nanoscale Proximity Effect in the High Temperature Superconductor Bi-2212
• Inhomogeneous Magnetic-Field Response of YBa2Cu3Oy and La2-xSrxCuO4 Persisting above the Bulk Superconducting Transition Temperature
• Staggered flux vortices and the superconducting transition in the layered cuprates
• Short-ranged and short-lived charge-density-wave order and pseudogap features in underdoped cuprates superconductors
• Effects of a particle-hole asymmetric pseudogap on Bogoliubov quasiparticles
• Experimental investigation of the origin of the cross-over temperature in the cuprates
• Charge carrier correlation in the electron-doped t-J model

Cited by in corpus (1)

• Variational Monte Carlo study of spin dynamics in underdoped cuprates