Eur. Phys. J. B (2012) 85: 131
https://doi.org/10.1140/epjb/e2012-20539-y

Regular Article

Dual features of magnetic susceptibility in superconducting cuprates: a comparison to inelastic neutron scattering

¹ Kazan Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russian Federation
² Institute für Theoretische Physik III, Ruhr-Universität Bochum, 44801 Bochum, Germany

^a e-mail: mikhail.eremin@ksu.ru

Received: 5 July 2011
Received in final form: 4 February 2012
Published online: 24 April 2012

Abstract

Starting from the generalized t−J−G model Hamiltonian, we analyze the spin response in the superconducting cuprates taking into account both local and itinerant spin components which are coupled to each other self-consistently. We demonstrate that derived expression reproduces the basic observations of neutron scattering data in YBa₂Cu₃O_6+y compounds near the optimal doping level.