Raman Response in Doped Antiferromagnets

Abstract

The resonant part of the $B_{1g}$ electronic Raman scattering response is calculated within the $t-J$ model on a planar lattice as a function of temperature and hole doping, using a finite-temperature diagonalization method for small systems. Results, directly applicable to experiments on cuprates, reveal on doping a very pronounced increase of the width of the two-magnon Raman peak, accompanied by a decrease of the total intensity. At the same time the peak position does not shift substantially in the underdoped regime.

11 pages revtex, 3 postscript figures. Minor corrections and changes from previous version, to be published in Phys. Rev. B

References in corpus (6)

• Correlated Electrons in High Temperature Superconductors
• Resonant two-magnon Raman scattering in parent compounds of high-T${}_c$ superconductors.
• Resonant two-magnon Raman scattering in antiferromagnetic insulators
• Magnetic Raman Scattering in Two-Dimensional Spin-1/2 Heisenberg Antiferromagnets: Spectral Shape Anomaly and Magnetostrictive Effects
• Anomalous Spin Dynamics in Doped Quantum Antiferromagnets
• Charge Dynamics in the Planar t-J Model

Cited by in corpus (6)

• Inelastic Light Scattering From Correlated Electrons
• Paramagnons and high-temperature superconductivity in mercury-based cuprates
• Two-particle response in Cluster Dynamical Mean-Field Theory: Formalism and application to the Raman Response of High-temperature Superconductors
• Numerical Calculations of the B1g Raman Spectrum of the Two-Dimensional Heisenberg Model
• Magnetic crossover and complex excitation spectrum of the ferromagnetic/antiferromagnetic spin-1/2 chain system alpha-TeVO4
• Spin singlet and quasiparticles excitations in cuprate superconductors