Theory for Inelastic Neutron Scattering in Orthorhombic High-Tc Superconductors

Details Theory for Inelastic Neutron Scattering in Orthorhombic High-Tc Superconductors Theory for Inelastic Neutron Scattering in Orthorhombic High-Tc Superconductors

2005-10-28

arxiv.org/abs/cond-mat/0510790v2

Phys. Rev. B 73, 224523 (2006)

Physics

Condensed Matter

Superconductivity

8 pages, 8 figures

Scientific paper

10.1103/PhysRevB.73.224523

Using a Fermi-liquid-based theory we calculate the in-plane anisotropy of the spin susceptibility for hole-doped high-T_c cuprates. Employing the two-dimensional one-band Hubbard model and a generalized RPA-type theory we consider anisotropic hopping matrix elements ($t_x \neq t_y$) and a mixing of d- and s-wave symmetry of the superconducting order parameter in order to describe orthorhombic superconductors. We compare our calculations with available inelastic neutron scattering data on untwinned YBa{2}Cu{3}O{7-\delta} and find good agreement. Furthermore, we predict a strongly anisotropic in-plane dispersion of the resonance peak.

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