Quasiparticle Formation and Optical Sum Rule Violation in Cuprate Superconductors

Abstract

Using a simple model for the frequency dependent scattering rate, we evaluate the in-plane optical integral for cuprate superconductors in the normal and superconducting states. In the overdoped region, this integral is conserved. In the optimal and underdoped region, though, the optical integrals differ, implying a lowering of the in-plane kinetic energy in the superconducting state. This sum rule violation, due to the difference of the non Fermi liquid normal state and the superconducting Fermi liquid state, has a magnitude comparable to recent experimental results.

5 pages, revtex, 4 encapsulated postscript figures

References in corpus (1)

• Correlation of Tunneling Spectra in Bi2Sr2CaCu2O(8+delta) with the Resonance Spin Excitation

Cited by in corpus (36)

• Electrodynamics of Correlated Electron Materials
• Ultrafast optical spectroscopy of strongly correlated materials and high-temperature superconductors: a non-equilibrium approach
• Revealing the high-energy electronic excitations underlying the onset of high-temperature superconductivity in cuprates
• Pairing in cuprates from high energy electronic states
• In-Plane Spectral Weight Shift of Charge Carriers in $YB{a}_{2}C{u}_3{O}_{6.9}$
• Kinetic energy change with doping upon superfluid condensation in high temperature superconductors
• Doping Dependence of the Redistribution of Optical Spectral Weight in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Temperature dependence of the optical spectral weight in the cuprates: Role of electron correlations
• Sum rules and energy scales in the high-temperature superconductor YBa2Cu3O6+x
• The in-plane electrodynamics of the superconductivity in Bi2Sr2CaCu2O8+d: energy scales and spectral weight distribution
• Optical and thermodynamic properties of the high-temperature superconductor HgBa_2CuO_4+delta
• Superconductivity-Induced Transfer of In-Plane Spectral Weight in Bi2Sr2CaCu2O8: Resolving a Controversy
• Ward identity and optical-conductivity sum rule in the d-density wave state
• Infrared Signature of the Superconducting State in Pr(2-x)Ce(x)CuO(4)
• Optical Integral in the Cuprates and the Question of Sum Rule Violation
• Optical-conductivity sum rule in cuprates and unconventional charge density waves: a short review
• Electromagnetic response of superconductors and optical sum rule
• Optical sum increase due to electron undressing
• Optical Sum Rule in Finite Bands
• Effect of orbital currents on the restricted optical sum rule
• Optical sum rule anomalies in the cuprates: interplay between strong correlation and electronic bandstructures
• Kinetic Energy, Condensation Energy, Optical Sum Rule and Pairing Mechanism in High-Tc Cuprates
• Interpretation of the in-plane infrared response of the high-Tc cuprate superconductors involving spin fluctuations revisited
• Intraband Optical Spectral Weight in the presence of a van Hove singularity: application to Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Optical sum rule in metals with a strong interaction
• An extended infrared study of the (p,T) phase diagram of the p-doped Cu-O plane
• Optical Integral and Sum Rule Violation
• Optical sum in Nearly Antiferromagnetic Fermi Liquid Model
• Temperature Dependence of the Conductivity Sum Rule in the Normal State due to Inelastic Scattering
• Sum-rules for Raman scattering off strongly correlated electron systems
• Impact of a finite cut-off for the optical sum rule in the superconducting state
• The spin resonance and high frequency optical properties of the cuprates
• Pseudogap Phase: Exchange Energy Driven vs. Kinetic Energy Driven
• Temperature dependence of the spectral weight in p- and n-type cuprates: a study of normal state partial gaps and electronic kinetic energy
• Optical Sum Rule anomalies in the High-Tc Cuprates
• Stripe-Like Inhomogeneities, Spectroscopies, Pairing, and Coherence in the High-Tc Cuprates