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Influence of higher<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>d</mml:mi></mml:math>-wave gap harmonics on the dynamical magnetic susceptibility of high-temperature superconductors

Influence of higher<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>d</mml:mi></mml:math>-wave gap harmonics on the dynamical magnetic susceptibility of high-temperature superconductors

Using a fermiology approach to the computation of the magnetic susceptibility measured by neutron scattering in hole-doped high-${T}_{c}$ superconductors, we estimate the effects on the incommensurate peaks caused by higher $d$-wave harmonics of the superconducting order parameter induced by underdoping. The input parameters for the Fermi surface and $d$-wave gap …