Quasiparticles and c-axis coherent hopping in high T_c superconductors

Abstract

We study the problem of the low-energy quasiparticle spectrum of the extended t-J model and analyze the coherent hopping between weakly coupled planes described by this model. Starting with a two-band model describing the Cu-O planes and the unoccupied bands associated to the metallic atoms located in between the planes, we obtain effective hopping matrix elements describing the c-axis charge transfer. A computational study of these processes shows an anomalously large charge anisotropy for doping concentrations around and below the optimal doping.

4 pages, 3 figures

References in corpus (4)

• Local Magnetic Order vs. Superconductivity in a Layered Cuprate
• Doped Stripes in Models for the Cuprates Emerging from the One-hole Properties of the Insulator
• Indications of Spin-Charge Separation in the 2D Extended t-J Model
• Spin Liquid State around a Doped Hole in Insulating Cuprates

Cited by in corpus (1)

• Optical symmetries and anisotropic transport in high-Tc superconductors