Paramagnon-induced dispersion anomalies in the cuprates

Abstract

We report the self-energy associated with RPA magnetic susceptibility in the hole-doped Bi_2Sr_2CuO_6 (Bi2201) and the electron-doped Nd_{2-x}Ce_xCuO_4 (NCCO) in the overdoped regime within the framework of a one-band Hubbard model. Strong weight is found in the magnetic spectrum around (pi, 0) at about 360 meV in Bi2201 and 640 meV in NCCO, which yields dispersion anomalies in accord with the recently observed `waterfall' effects in the cuprates.

Submitted to PRL, Dec. 21, 2006; 4 eps figures, revtex

References in corpus (9)

• A universal high energy anomaly in angle resolved photoemission spectra of high temperature superconductors - possible evidence of spinon and holon branches
• High-energy kink in high-temperature superconductors
• The hierarchy of multiple many-body interaction scales in high-temperature superconductors
• High-energy scale revival and giant kink in the dispersion of a cuprate superconductor
• Strong charge fluctuations manifested in the high-temperature Hall coefficient of high-T_c cuprates
• Magnetic Excitations and their energy change available to Superconducting Condensation in Optimally Doped YBa${}_2$Cu${}_3$O${}_{6.95}$
• Spin Susceptibility Representation of the Pairing Interaction for the two-dimensional Hubbard Model
• Possible observation of "string excitations" of a hole in a quantum antiferromagnet
• Renormalization of the electron-spin-fluctuation interaction in the t-t'-U Hubbard model

Cited by in corpus (8)

• Effect of strong correlations on the high energy anomaly in hole- and electron-doped high-Tc superconductors
• A competing order scenario of two-gap behavior in hole doped cuprates
• Temperature and doping dependence of high-energy kink in cuprates
• Excitation energy map of the high-energy dispersion anomalies in cuprates
• Extracting the spectral function of the cuprates by a full two-dimensional analysis: Angle-resolved photoemission spectra of Bi2Sr2CuO6
• Magnetic mechanism of quasiparticle pairing in hole-doped cuprate superconductors
• Role of dynamical non-double-occupancy excitations on the quasiparticle damping of the $t-J$ model in the large-$N$ limit
• Energy-dependent scaling of incoherent spectral weight and the origin of the waterfalls in high-Tc cuprates