Spin dynamics in the antiferromagnetic phase for electron-doped cuprate superconductors

Abstract

Based on the $t$-$t^{\prime }$-$t^{\prime \prime }$-$J$ model we have calculated the dynamical spin susceptibilities in the antiferromagnetic (AF) phase for electron-doped cuprates, by use of the slave-boson mean-field theory and random phase approximation. Various results for the susceptibilities versus energy and momentum have been shown at different dopings. At low energy, except the collective spin-wave mode around $(\pi ,\pi )$ and 0, we have primarily observed that new resonance peaks will appear around $(0.3\pi ,0.7\pi )$ and equivalent points with increasing doping, which are due to the particle-hole excitations between the two AF bands. The peaks are pronounced in the transverse susceptibility but not in the longitudinal one. These features are predicted for neutron scattering measurements.

5 pages, 3 figures, published version with minor changes

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Cited by in corpus (13)

• High Energy Spin Excitations in Electron-Doped Superconducting Pr${}_{0.88}$LaCe${}_{0.12}$CuO${}_{4-\delta }$ with $T_c=21$ K
• Nonmonotonic gap in the coexisting antiferromagnetic and superconducting state for electron-doped cuprate superconductors
• Doping dependence of the electron-doped cuprate superconductors from the antiferromagnetic properties of the Hubbard model
• Gap function symmetry and spin dynamics in electron-doped cuprate superconductor
• Signatures of strong correlation effects in RIXS on Cuprates
• Long-Range Coulomb Effect on the Antiferromagnetism in Electron-doped Cuprates
• Theory of antiferromagnetism in the electron-doped cuprate superconductors
• Spin and bond-charge excitation spectra in correlated electron systems near antiferromagnetic phase
• Charge carrier correlation in the electron-doped t-J model
• Evolution of the magnetic excitations in electron-doped ${\mathrm{La}}_{2-x}{\mathrm{Ce}}_x{\mathrm{CuO}}_4$
• Origin of the pseudogap and its influence on superconducting state
• The commensurate magnetic excitations induced by band-splitting and Fermi surface topology in n-type Cuprates
• Beyond on-site Hubbard interaction in charge dynamics of cuprate superconductors