Microscopic approach to the pseudo-spin-1/2 Hamiltonian for Kramers doublets in exchange coupled Co(II) pairs.
The microscopic theory of the magnetically anisotropic effective pseudo-spin-(1)/(2) Hamiltonian for a pair of Co(2+) ions is reported. In the framework of the second-order perturbation approach, the analytical expressions are found for the components of the tensor of the exchange interaction, g-tensor, and the factor in the temperature independent paramagnetic contribution. The parameters of the Hamiltonian are expressed in terms of the basic intra- and intercenter parameters of the pair, namely, the spin-orbit coupling constant, orbital reduction factor, exchange integral, and low symmetry crystal field parameters including axial and rhombic terms.
Palii
Andrei V
AV
Instituto de Ciencia Molecular, Universidad de Valencia, C/Dr. Moliner 50, 46100-Burjassot (Valencia), Spain.
Tsukerblat
Boris S
BS
Coronado
Eugenio
E
Clemente-Juan
Juan M
JM
Borrás-Almenar
Juan J
JJ