Abstract
A model of the crystal field generated by aperiodic array of charged tapes is developed to analyse the crystal-field interaction in RBa2CuxOx (R = Er, Ho) high-Tc copper oxides observed by the inelastic neutron scattering technique. The explicit calculation of the parameters of the Stevens Hamiltonian describing crystalline electric field effects in solids is performed for a specific charge density distribution uniformly extended in a certain direction of the crystal lattice. The model accounts for the x-dependence of the crystal-field parameters and allows us to determine the hole concentration in the CuO2 planes as a function of oxygen stoichiometry. The model of the periodic array of charged tapes suggests a charge order induced in the CuO2 planes by doping.
Original language | English |
---|---|
Pages (from-to) | 7155-7173 |
Number of pages | 19 |
Journal | Journal of Physics Condensed Matter |
Volume | 11 |
Issue number | 37 |
DOIs | |
State | Published - Sep 20 1999 |
Externally published | Yes |