Quasiparticle scattering interference in the renormalized Hubbard model

• DOI: 10.1007/s11467-014-0446-9
• Publication Date: 2014-09-27T02:56:48Z
• Authors: Shu-Hua Wang; Huai-Song Zhao; Feng Yuan
• Keywords: Brillouin zone; Momentum (technical analysis); Position (finance)

In this paper, we study the quasiparticle scattering interference phenomenon in the presence of a single impurity within the renormalized Hubbard model. By calculating the energy and momentum dependence of the Fourier-transformed local density of states in the full Brillouin zone, we can qualitatively describe the main features of the quasiparticle scattering interference phenomenon in cuprate superconductors using a single point-like impurity. In particular, we show that with increasing energy, the position of the peak along the nodal ([0, 0] → [π, π]) direction moves steadily to a large momentum region, while the position of the peak along the antinodal ([0, 0] → [π, 0]) direction moves toward the center of the Brillouin zone.