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Theory for Inelastic Neutron Scattering in Orthorhombic High-Tc Superconductors

Andreas P. Schnyder·Dirk Manske·Christopher Mudry·Manfred Sigrist
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Abstract

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-δ} and find good agreement. Furthermore, we predict a strongly anisotropic in-plane dispersion of the resonance peak.

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Andreas P. Schnyder, Dirk Manske, Christopher Mudry, Manfred Sigrist. 2006-06-05. Theory for Inelastic Neutron Scattering in Orthorhombic High-Tc Superconductors. https://doi.org/10.1103/physrevb.73.224523

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